Disable several GenericMath tests on iOS/tvOS (#61922)

The tests were failing on iOS/tvOS device runs.  #61920 was created to track them.

Co-authored-by: Steve Pfister <steve.pfister@microsoft.com>

Author: steveisok

src/libraries/System.Runtime/tests/System/IntPtrTests.GenericMath.cs

@@ -784,6 +784,7 @@ public static void CreateSaturatingFromCharTest()
         }
 
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/61920", TestPlatforms.iOS | TestPlatforms.tvOS)]
         public static void CreateSaturatingFromInt16Test()
         {
             Assert.Equal((nint)0x00000000, NumberHelper<nint>.CreateSaturating<short>(0x0000));
@@ -846,6 +847,7 @@ public static void CreateSaturatingFromIntPtrTest()
         }
 
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/61920", TestPlatforms.iOS | TestPlatforms.tvOS)]
         public static void CreateSaturatingFromSByteTest()
         {
             Assert.Equal((nint)0x00000000, NumberHelper<nint>.CreateSaturating<sbyte>(0x00));
@@ -949,6 +951,7 @@ public static void CreateTruncatingFromCharTest()
         }
 
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/61920", TestPlatforms.iOS | TestPlatforms.tvOS)]
         public static void CreateTruncatingFromInt16Test()
         {
             if (Environment.Is64BitProcess)
@@ -1022,6 +1025,7 @@ public static void CreateTruncatingFromIntPtrTest()
         }
 
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/61920", TestPlatforms.iOS | TestPlatforms.tvOS)]
         public static void CreateTruncatingFromSByteTest()
         {
             if (Environment.Is64BitProcess)
@@ -1231,6 +1235,7 @@ public static void TryCreateFromCharTest()
         }
 
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/61920", TestPlatforms.iOS | TestPlatforms.tvOS)]
         public static void TryCreateFromInt16Test()
         {
             nint result;
@@ -1355,6 +1360,7 @@ public static void TryCreateFromIntPtrTest()
         }
 
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/61920", TestPlatforms.iOS | TestPlatforms.tvOS)]
         public static void TryCreateFromSByteTest()
         {
             nint result;

src/libraries/tests.proj

@@ -181,7 +181,7 @@
 
   <ItemGroup Condition="'$(TargetOS)' == 'iOSSimulator' and '$(TargetArchitecture)' == 'arm64' and '$(RunDisablediOSTests)' != 'true'">
     <!-- Functional tests on arm64 simulator have problems with return codes from mlaunch -->
-    <ProjectExclusions Include="$(RepoRoot)\src\tests\FunctionalTests\$(TargetOS)\Simulator\**\*.Test.csproj" />
+    <ProjectExclusions Include="$(RepoRoot)\src\tests\FunctionalTests\iOS\Simulator\**\*.Test.csproj" />
   </ItemGroup>
 
   <!-- Excluding all tests for devices until building on helix works properly -->