Only include host.native instead of all host in default clr/mono subsets (#73800)

Author: elinor-fung

eng/Subsets.props

@@ -51,7 +51,7 @@
   </PropertyGroup>
 
   <PropertyGroup>
-    <DefaultCoreClrSubsets>clr.native+linuxdac+clr.corelib+clr.tools+clr.nativecorelib+clr.packages+clr.nativeaotlibs+clr.crossarchtools+host</DefaultCoreClrSubsets>
+    <DefaultCoreClrSubsets>clr.native+linuxdac+clr.corelib+clr.tools+clr.nativecorelib+clr.packages+clr.nativeaotlibs+clr.crossarchtools+host.native</DefaultCoreClrSubsets>
     <!-- Even on platforms that do not support the CoreCLR runtime, we still want to build ilasm/ildasm. -->
     <DefaultCoreClrSubsets Condition="'$(PrimaryRuntimeFlavor)' != 'CoreCLR'">clr.iltools+clr.packages</DefaultCoreClrSubsets>
 
@@ -62,7 +62,7 @@
     <DefaultMonoSubsets Condition="'$(TargetOS)' == 'Browser'">$(DefaultMonoSubsets)mono.wasmruntime+</DefaultMonoSubsets>
     <DefaultMonoSubsets Condition="'$(MonoCrossAOTTargetOS)' != ''">$(DefaultMonoSubsets)mono.aotcross+</DefaultMonoSubsets>
     <DefaultMonoSubsets>$(DefaultMonoSubsets)mono.runtime+mono.corelib+mono.packages+mono.tools+</DefaultMonoSubsets>
-    <DefaultMonoSubsets Condition="'$(TargetsMobile)' != 'true'">$(DefaultMonoSubsets)host+</DefaultMonoSubsets>
+    <DefaultMonoSubsets Condition="'$(TargetsMobile)' != 'true'">$(DefaultMonoSubsets)host.native+</DefaultMonoSubsets>
 
     <DefaultLibrariesSubsets Condition="'$(BuildTargetFramework)' == '$(NetCoreAppCurrent)' or
                                         '$(BuildTargetFramework)' == '' or

eng/pipelines/libraries/run-test-job.yml

@@ -90,7 +90,7 @@ jobs:
 
         - ${{ if ne(parameters.liveRuntimeBuildConfig, '') }}:
           - script: $(_buildScript)
-                    -subset host+libs.pretest
+                    -subset host.native+libs.pretest
                     $(_buildArguments)
                     /p:RuntimeFlavor=${{ parameters.runtimeFlavor }}
                     /bl:$(Build.SourcesDirectory)/artifacts/log/$(_BuildConfig)/overrideRuntimeFromLiveDrop.binlog