[wasm][aot] Disable System.Text.RegularExpressions.Unit.Tests (#66311)

Issue: #66118

Author: radical

src/libraries/tests.proj

@@ -32,6 +32,9 @@
 
   <!-- Wasm aot on all platforms -->
   <ItemGroup Condition="'$(TargetOS)' == 'Browser' and '$(BuildAOTTestsOnHelix)' == 'true' and '$(RunDisabledWasmTests)' != 'true' and '$(RunAOTCompilation)' == 'true'">
+    <!-- https://github.com/dotnet/runtime/issues/66118 -->
+    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Text.RegularExpressions\tests\UnitTests\System.Text.RegularExpressions.Unit.Tests.csproj" />
+
     <!-- https://github.com/dotnet/runtime/issues/61756 -->
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Text.RegularExpressions\tests\FunctionalTests\System.Text.RegularExpressions.Tests.csproj" />