[wasm][aot][tests] Enable libraries that have been consistently passing (#54291)

* [wasm][aot][tests] Enable libraries that have been consistently passing

.. on the tracking PR.

- `System.Linq.Tests`
Fixes #51722

- `System.Runtime.Extensions.Tests`
- `System.IO.Pipelines.Tests`
    - the failing tests have been disabled

* [wasm][aot][tests] Disable more tests that depend on stacktraces

.. in System.Runtime.Tests . The library is still disabled for AOT,
because it hasn't been stable only for the last 7 days.

* Re-enable System.Runtime.Loader.Tests which is passing now.

Author: radical

src/libraries/System.Runtime/tests/System/ExceptionTests.cs

@@ -92,13 +92,15 @@ static void RethrowException()
         }
 
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/50957", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsMonoAOT))]
         public static void Exception_TargetSite_OtherMethod()
         {
             Exception ex = Assert.ThrowsAny<Exception>(() => ThrowException());
             Assert.Equal(nameof(ThrowException), ex.TargetSite.Name);
         }
 
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/50957", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsMonoAOT))]
         public static void Exception_TargetSite_Rethrow()
         {
             Exception ex = Assert.ThrowsAny<Exception>(() => RethrowException());

src/libraries/tests.proj

@@ -276,23 +276,11 @@
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetOS)' == 'Browser' and '$(BuildAOTTestsOnHelix)' == 'true' and '$(RunDisabledWasmTests)' != 'true' and '$(RunAOTCompilation)' == 'true'">
-    <!-- Issue: https://github.com/dotnet/runtime/issues/51722 -->
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Linq\tests\System.Linq.Tests.csproj" />
-
-    <!-- Issue: https://github.com/dotnet/runtime/issues/51678 -->
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime.Loader\tests\System.Runtime.Loader.Tests.csproj" />
-
-    <!-- Issue: https://github.com/dotnet/runtime/issues/50957 -->
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime.Extensions\tests\System.Runtime.Extensions.Tests.csproj" />
-
     <!-- Issue: https://github.com/dotnet/runtime/issues/52393 -->
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime/tests/System.Runtime.Tests.csproj" />
 
     <!-- Issue: https://github.com/dotnet/runtime/issues/51961 -->
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Text.Json/tests/System.Text.Json.Tests/System.Text.Json.Tests.csproj" />
-
-    <!-- Issue: https://github.com/dotnet/runtime/issues/50957 -->
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.IO.Pipelines\tests\System.IO.Pipelines.Tests.csproj" />
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetOS)' == 'Browser' and '$(BuildAOTTestsOnHelix)' == 'true' and '$(RunDisabledWasmTests)' != 'true'">