Annotate SignalR client for native AOT (#56079)

Addresses the following problems:

0. Fix up some infrastructure around TrimmingAttributes to be cleaner.
    - Don't need to condition when to include them. Just always include them if you need it, and the TFM checks will be done for you.
    - Remove duplicate, standalone attribute files
1. HubConnection and ReflectionHelper's usage of finding IAsyncEnumerable interface
2. HubConnection's usage of MakeGenericMethod when using a streaming reader (IAsyncEnumerable or ChannelReader).
    - The only idea I have here is to follow the same approach as we do in DependencyInjection and elsewhere, which is to check for `IsDynamicCodeSupported == false` && `IsValueType` and throw an exception. This enables people to get exceptions during F5, and not only after publishing.

Author: eerhardt

eng/TrimmableProjects.props

@@ -85,8 +85,12 @@
     <TrimmableProject Include="Microsoft.AspNetCore.SpaServices.Extensions" />
     <TrimmableProject Include="Microsoft.AspNetCore.StaticFiles" />
     <TrimmableProject Include="Microsoft.AspNetCore.WebSockets" />
+    <TrimmableProject Include="Microsoft.AspNetCore.SignalR.Client.Core" />
+    <TrimmableProject Include="Microsoft.AspNetCore.SignalR.Client" />
+    <TrimmableProject Include="Microsoft.AspNetCore.Http.Connections.Client" />
     <TrimmableProject Include="Microsoft.AspNetCore.Http.Connections.Common" />
     <TrimmableProject Include="Microsoft.AspNetCore.Http.Connections" />
+    <TrimmableProject Include="Microsoft.AspNetCore.SignalR.Protocols.Json" />
     <TrimmableProject Include="Microsoft.AspNetCore.SignalR.Common" />
     <TrimmableProject Include="Microsoft.AspNetCore.StaticAssets" />
     <TrimmableProject Include="Microsoft.AspNetCore.Components.Authorization" />

src/DataProtection/Abstractions/src/Microsoft.AspNetCore.DataProtection.Abstractions.csproj

@@ -16,8 +16,7 @@ Microsoft.AspNetCore.DataProtection.IDataProtector</Description>
   <ItemGroup>
     <Compile Include="..\..\shared\src\*.cs" LinkBase="Shared" />
     <Compile Include="$(SharedSourceRoot)WebEncoders\**\*.cs" />
-    <Compile Include="$(SharedSourceRoot)TrimmingAttributes.cs" LinkBase="Shared"
-      Condition="'$(TargetFramework)' != '$(DefaultNetCoreTargetFramework)'" />
+    <Compile Include="$(SharedSourceRoot)TrimmingAttributes.cs" LinkBase="Shared" />
     <Compile Include="$(SharedSourceRoot)ThrowHelpers\ArgumentNullThrowHelper.cs" LinkBase="Shared" />
     <Compile Include="$(SharedSourceRoot)ThrowHelpers\ArgumentOutOfRangeThrowHelper.cs" LinkBase="Shared" />
     <Compile Include="$(SharedSourceRoot)CallerArgument\CallerArgumentExpressionAttribute.cs" LinkBase="Shared" />

src/DataProtection/DataProtection/src/Microsoft.AspNetCore.DataProtection.csproj

@@ -18,8 +18,7 @@
     <Compile Include="..\..\shared\src\*.cs" LinkBase="Shared" />
     <Compile Include="$(SharedSourceRoot)PlatformAttributes.cs" LinkBase="Shared"
       Condition="'$(TargetFramework)' != '$(DefaultNetCoreTargetFramework)'" />
-    <Compile Include="$(SharedSourceRoot)TrimmingAttributes.cs" LinkBase="Shared"
-      Condition="'$(TargetFramework)' != '$(DefaultNetCoreTargetFramework)'" />
+    <Compile Include="$(SharedSourceRoot)TrimmingAttributes.cs" LinkBase="Shared" />
     <Compile Include="$(SharedSourceRoot)ThrowHelpers\ArgumentNullThrowHelper.cs" LinkBase="Shared" />
     <Compile Include="$(SharedSourceRoot)CallerArgument\CallerArgumentExpressionAttribute.cs" LinkBase="Shared" />
   </ItemGroup>

src/DataProtection/Extensions/src/Microsoft.AspNetCore.DataProtection.Extensions.csproj

@@ -12,8 +12,7 @@
 
   <ItemGroup>
     <Compile Include="..\..\shared\src\*.cs" LinkBase="Shared" />
-    <Compile Include="$(SharedSourceRoot)TrimmingAttributes.cs" LinkBase="Shared"
-      Condition="'$(TargetFramework)' != '$(DefaultNetCoreTargetFramework)'" />
+    <Compile Include="$(SharedSourceRoot)TrimmingAttributes.cs" LinkBase="Shared" />
     <Compile Include="$(SharedSourceRoot)ThrowHelpers\ArgumentThrowHelper.cs" LinkBase="Shared" />
     <Compile Include="$(SharedSourceRoot)ThrowHelpers\ArgumentNullThrowHelper.cs" LinkBase="Shared" />
     <Compile Include="$(SharedSourceRoot)CallerArgument\CallerArgumentExpressionAttribute.cs" LinkBase="Shared" />

src/FileProviders/Embedded/src/Microsoft.Extensions.FileProviders.Embedded.csproj

@@ -43,7 +43,6 @@
     <Compile Include="$(SharedSourceRoot)ThrowHelpers\ArgumentNullThrowHelper.cs" LinkBase="Shared" />
     <Compile Include="$(SharedSourceRoot)ThrowHelpers\ArgumentThrowHelper.cs" LinkBase="Shared" />
     <Compile Include="$(SharedSourceRoot)CallerArgument\CallerArgumentExpressionAttribute.cs" LinkBase="Shared" />
-    <Compile Include="$(SharedSourceRoot)TrimmingAttributes.cs" LinkBase="Shared"
-             Condition="'$(TargetFramework)' != '$(DefaultNetCoreTargetFramework)'" />
+    <Compile Include="$(SharedSourceRoot)TrimmingAttributes.cs" LinkBase="Shared" />
   </ItemGroup>
 </Project>

src/HealthChecks/HealthChecks/src/Microsoft.Extensions.Diagnostics.HealthChecks.csproj

@@ -22,8 +22,7 @@ Microsoft.Extensions.Diagnostics.HealthChecks.IHealthChecksBuilder
     <Compile Include="$(SharedSourceRoot)NonCapturingTimer\*.cs" />
     <Compile Include="$(SharedSourceRoot)ValueStopwatch\*.cs" />
 
-    <Compile Include="$(SharedSourceRoot)TrimmingAttributes.cs" LinkBase="Shared"
-      Condition="'$(TargetFramework)' != '$(DefaultNetCoreTargetFramework)'" />
+    <Compile Include="$(SharedSourceRoot)TrimmingAttributes.cs" LinkBase="Shared" />
     <Compile Include="$(SharedSourceRoot)ThrowHelpers\ArgumentNullThrowHelper.cs" LinkBase="Shared" />
     <Compile Include="$(SharedSourceRoot)CallerArgument\CallerArgumentExpressionAttribute.cs" LinkBase="Shared" />
   </ItemGroup>

src/Identity/Extensions.Core/src/Microsoft.Extensions.Identity.Core.csproj

@@ -15,8 +15,7 @@
     <Reference Include="Microsoft.Extensions.Logging" />
     <Reference Include="Microsoft.Extensions.Options" />
 
-    <Compile Include="$(SharedSourceRoot)TrimmingAttributes.cs" LinkBase="Shared"
-      Condition="'$(TargetFramework)' != '$(DefaultNetCoreTargetFramework)'" />
+    <Compile Include="$(SharedSourceRoot)TrimmingAttributes.cs" LinkBase="Shared" />
     <Compile Include="$(SharedSourceRoot)ThrowHelpers\ArgumentNullThrowHelper.cs" LinkBase="Shared" />
     <Compile Include="$(SharedSourceRoot)ThrowHelpers\ObjectDisposedThrowHelper.cs" LinkBase="Shared" />
     <Compile Include="$(SharedSourceRoot)CallerArgument\CallerArgumentExpressionAttribute.cs" LinkBase="Shared" />

src/Identity/Extensions.Stores/src/Microsoft.Extensions.Identity.Stores.csproj

@@ -15,8 +15,7 @@
     <Reference Include="Microsoft.Extensions.Logging" />
     <Reference Include="Microsoft.Extensions.Identity.Core" />
 
-    <Compile Include="$(SharedSourceRoot)TrimmingAttributes.cs" LinkBase="Shared"
-      Condition="'$(TargetFramework)' != '$(DefaultNetCoreTargetFramework)'" />
+    <Compile Include="$(SharedSourceRoot)TrimmingAttributes.cs" LinkBase="Shared" />
     <Compile Include="$(SharedSourceRoot)ThrowHelpers\ArgumentNullThrowHelper.cs" LinkBase="Shared" />
     <Compile Include="$(SharedSourceRoot)ThrowHelpers\ObjectDisposedThrowHelper.cs" LinkBase="Shared" />
     <Compile Include="$(SharedSourceRoot)CallerArgument\CallerArgumentExpressionAttribute.cs" LinkBase="Shared" />

src/Servers/Connections.Abstractions/src/Microsoft.AspNetCore.Connections.Abstractions.csproj

@@ -19,9 +19,9 @@
 
     <Compile Include="$(SharedSourceRoot)ActivatorUtilities\*.cs" />
     <Compile Include="$(SharedSourceRoot)ParameterDefaultValue\*.cs" />
-    <Compile Include="$(SharedSourceRoot)CodeAnalysis\*.cs" />
     <Compile Include="$(SharedSourceRoot)Debugger\DictionaryDebugView.cs" LinkBase="Shared" />
     <Compile Include="$(SharedSourceRoot)Debugger\DictionaryItemDebugView.cs" LinkBase="Shared" />
+    <Compile Include="$(SharedSourceRoot)TrimmingAttributes.cs" LinkBase="Shared" />
   </ItemGroup>
 
   <ItemGroup>