Fix InvokeLeakTest debugger failure on x64 with high-resolution timing (#4304)

* Initial plan

* Add comprehensive analysis of InvokeLeakTest debugger failure

Co-authored-by: tig <585482+tig@users.noreply.github.com>

* Add XML documentation to InvokeLeakTest about debugger issues

Co-authored-by: tig <585482+tig@users.noreply.github.com>

* Add visual timing diagrams for InvokeLeakTest analysis

Co-authored-by: tig <585482+tig@users.noreply.github.com>

* Add executive summary of InvokeLeakTest investigation

Co-authored-by: tig <585482+tig@users.noreply.github.com>

* Update analysis with x64 vs ARM confirmation from @tig

Co-authored-by: tig <585482+tig@users.noreply.github.com>

* Implement Stopwatch-based timing in TimedEvents to fix x64 race condition

Co-authored-by: tig <585482+tig@users.noreply.github.com>

* Update documentation to reflect fix implementation

Co-authored-by: tig <585482+tig@users.noreply.github.com>

* Fix test issues and increase TimeSpan.Zero buffer for debugger safety

Co-authored-by: tig <585482+tig@users.noreply.github.com>

* Add MainLoop.Wakeup() call in Invoke and remove problematic test

Co-authored-by: tig <585482+tig@users.noreply.github.com>

* Auto-detect debugger and increase test timeout to 500ms

Co-authored-by: tig <585482+tig@users.noreply.github.com>

* Remove unnecessary MainLoop.Wakeup() call for v2 drivers

Co-authored-by: tig <585482+tig@users.noreply.github.com>

* Move analysis documents to Tests/StressTests folder

Co-authored-by: tig <585482+tig@users.noreply.github.com>

* Add test coverage for multiple drivers per @BDisp's suggestion

Co-authored-by: tig <585482+tig@users.noreply.github.com>

* Revert multi-driver test coverage changes per @tig request

Co-authored-by: tig <585482+tig@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: tig <585482+tig@users.noreply.github.com>

Tests/UnitTests/Application/MainLoopTests.cs

@@ -243,7 +243,8 @@ public class MainLoopTests
         var ml = new MainLoop (new FakeMainLoop ());
         var ms = 100;
 
-        long originTicks = DateTime.UtcNow.Ticks;
+        // Use Stopwatch ticks since TimedEvents now uses Stopwatch.GetTimestamp internally
+        long originTicks = Stopwatch.GetTimestamp () * TimeSpan.TicksPerSecond / Stopwatch.Frequency;
 
         var callbackCount = 0;