[lldb] Skip test TestThreadSpecificBreakpoint on Windows (#79737)

Test timed out in Swift CI, so we should consider it flaky

Author: weliveindetail

utils/windows-llvm-lit-test-overrides.txt

@@ -136,6 +136,7 @@ skip lldb-api :: commands/thread/backtrace/TestThreadBacktraceRepeat.py
 skip lldb-api :: functionalities/inferior-crashing/TestInferiorCrashing.py
 skip lldb-api :: functionalities/inline-stepping/TestInlineStepping.py
 skip lldb-api :: functionalities/step_scripted/TestStepScripted.py
+skip lldb-api :: functionalities/thread/thread_specific_break/TestThreadSpecificBreakpoint.py
 
 ### Tests that pass occasionally ###