[native_assets_cli] Fix download_asset example (#2105)

Author: dcharkes

.github/workflows/native.yaml

@@ -184,10 +184,13 @@ jobs:
         working-directory: pkgs/${{ matrix.package }}/example/build/use_dart_api/
         if: ${{ matrix.package == 'native_assets_cli' && matrix.sdk == 'dev' && !matrix.breaking-change }}
 
-      # TODO(https://github.com/dart-lang/native/issues/1879): Enable this when the fix has rolled into Dart.
-      # - run: dart --enable-experiment=native-assets test
-      #   working-directory: pkgs/${{ matrix.package }}/example/build/system_library/
-      #   if: ${{ matrix.package == 'native_assets_cli' && matrix.sdk == 'dev' && !matrix.breaking-change }}
+      - run: dart --enable-experiment=native-assets test
+        working-directory: pkgs/${{ matrix.package }}/example/build/download_asset/
+        if: ${{ matrix.package == 'native_assets_cli' && matrix.sdk == 'dev' && !matrix.breaking-change }}
+
+      - run: dart --enable-experiment=native-assets test
+        working-directory: pkgs/${{ matrix.package }}/example/build/system_library/
+        if: ${{ matrix.package == 'native_assets_cli' && matrix.sdk == 'dev' && !matrix.breaking-change }}
 
       - name: Install coverage
         run: dart pub global activate coverage

pkgs/native_assets_cli/example/build/download_asset/hook/build.dart

@@ -33,10 +33,12 @@ void main(List<String> args) async {
       );
       final fileHash = await hashAsset(file);
       final expectedHash =
-          assetHashes[createTargetName(
-            targetOS.name,
-            targetArchitecture.name,
-            iOSSdk?.type,
+          assetHashes[input.config.code.targetOS.dylibFileName(
+            createTargetName(
+              targetOS.name,
+              targetArchitecture.name,
+              iOSSdk?.type,
+            ),
           )];
       if (fileHash != expectedHash) {
         throw Exception(