[wasm][mt] Fix System.Threading.Tasks.Parallel build (#97505)

* [wasm][mt] Fix System.Threading.Tasks.Parallel build

Fixes #91583 and #91579

* Enable 5 more tests

* Feedback

* Fix typo

Author: radekdoulik

src/libraries/System.Threading.Tasks.Parallel/src/System.Threading.Tasks.Parallel.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>$(NetCoreAppCurrent)</TargetFramework>
+    <TargetFrameworks>$(NetCoreAppCurrent);$(NetCoreAppCurrent)-browser</TargetFrameworks>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <UseCompilerGeneratedDocXmlFile>false</UseCompilerGeneratedDocXmlFile>
   </PropertyGroup>

src/libraries/System.Threading.Tasks.Parallel/tests/ParallelForTests.cs

@@ -885,7 +885,6 @@ public static void TestParallelForPaths_Exceptions()
         }
 
         [ConditionalFact(typeof(PlatformDetection), nameof(PlatformDetection.IsThreadingSupported))]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/91582", typeof(PlatformDetection), nameof(PlatformDetection.IsWasmThreadingSupported))]
         public static void TestParallelScheduler()
         {
             ParallelOptions parallelOptions = new ParallelOptions();
@@ -993,7 +992,6 @@ public static void TestParallelScheduler()
         }
 
         [ConditionalFact(typeof(PlatformDetection), nameof(PlatformDetection.IsThreadingSupported))]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/91541", typeof(PlatformDetection), nameof(PlatformDetection.IsWasmThreadingSupported))]
         public static void TestInvokeDOPAndCancel()
         {
             ParallelOptions parallelOptions = null;

src/libraries/System.Threading.Tasks.Parallel/tests/ParallelLoopResultTests.cs

@@ -373,7 +373,6 @@ private static void OrderablePartitionerForEachPLRTest(
 
         // Perform tests on various combinations of Stop()/Break()
         [ConditionalFact(typeof(PlatformDetection), nameof(PlatformDetection.IsThreadingSupported))]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/91579", typeof(PlatformDetection), nameof(PlatformDetection.IsWasmThreadingSupported))]
         public static void SimultaneousStopBreakTests()
         {
             //

src/libraries/System.Threading.Tasks.Parallel/tests/RangePartitioner1Chunk.cs

@@ -101,7 +101,6 @@ static void oneMoveNext(int length, bool isOrderable)
         /// </summary>
         /// <param name="length"></param>
         [ConditionalFact(typeof(PlatformDetection), nameof(PlatformDetection.IsThreadingSupported))]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/97396", typeof(PlatformDetection), nameof(PlatformDetection.IsWasmThreadingSupported))]
         public static void IterationsWithDependency()
         {
             static void iterationsWithDependency(int length, int dependencyIndex)
@@ -167,7 +166,6 @@ public static void PFEDisposeEnum()
         /// Exception is expected and the enumerators are disposed
         /// </summary>
         [ConditionalFact(typeof(PlatformDetection), nameof(PlatformDetection.IsThreadingSupported))]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/91581", typeof(PlatformDetection), nameof(PlatformDetection.IsWasmThreadingSupported))]
         public static void ExceptionOnMoveNext()
         {
             static void exceptionOnMoveNext(int length, int indexToThrow, bool isOrderable)

src/libraries/System.Threading.Tasks.Parallel/tests/RangePartitionerTests.cs

@@ -10,7 +10,6 @@ namespace System.Threading.Tasks.Tests
     public static class RangePartitionerTests
     {
         [ConditionalFact(typeof(PlatformDetection), nameof(PlatformDetection.IsThreadingSupported))]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/97440", typeof(PlatformDetection), nameof(PlatformDetection.IsWasmThreadingSupported))]
         public static void RunPartitionerStaticTest_SingleChunking()
         {
             CountdownEvent cde = new CountdownEvent(2);