[wasm][aot][tests] Disable tests causing crash - System.Text.Encoding… (#53971)

Co-authored-by: Larry Ewing <lewing@microsoft.com>

Author: radical

src/libraries/System.Text.Encodings.Web/tests/TextEncoderSettingsTests.cs

@@ -31,6 +31,7 @@ public static bool IsCharacterAllowed(this TextEncoderSettings settings, char ch
         }
     }
 
+    [ActiveIssue("https://github.com/dotnet/runtime/issues/50965", TestPlatforms.Browser)]
     public class TextEncoderSettingsTests
     {
         [Fact]

src/libraries/tests.proj

@@ -255,9 +255,6 @@
     <!-- 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/50965 -->
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Text.Encodings.Web\tests\System.Text.Encodings.Web.Tests.csproj" />
-
     <!-- Issue: https://github.com/dotnet/runtime/issues/51678 -->
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime.Loader\tests\System.Runtime.Loader.Tests.csproj" />