Unstable unit test: System.Windows.Forms.Tests.ToolStripTests.ToolStrip_WndProc_InvokeMouseActivate_Success

[LeafShi1]

Related #11227

Test

System.Windows.Forms.Tests.ToolStripTests.ToolStrip_WndProc_InvokeMouseActivate_Success

Issue description

The case failed in X64 unit tests, the failure link:

• #20240520.13 • Merge pull request #11400 from dotnet/darc-main-dc9509e6-219c-4e5b-b9cb-36f21d03c3c2
• #20240513.6 • [main] Update dependencies from dotnet/runtime (#11364)

Error Message:

• Assert.Equal() Failure: Values differ Expected: 0 Actual: 2

Stack trace:

 at System.Windows.Forms.Tests.ToolStripTests.ToolStrip_WndProc_InvokeMouseActivate_Success() in /_/src/System.Windows.Forms/tests/UnitTests/System/Windows/Forms/ToolStripTests.cs:line 7147
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Void** arguments, Signature sig, Boolean isConstructor)
   at System.Reflection.MethodBaseInvoker.InvokeWithNoArgs(Object obj, BindingFlags invokeAttr)