bpo-31516: Skip test_main_thread_during_shutdown() with COUNT_ALLOCS builds. (GH-8052)

(cherry picked from commit 65d2f8c)

Co-authored-by: Zackery Spytz <[email protected]>

Author: miss-islington

Lib/test/test_threading.py

@@ -546,6 +546,7 @@ def f():
         self.assertEqual(err, b"")
         self.assertEqual(data, "Thread-1\nTrue\nTrue\n")
 
+    @requires_type_collecting
     def test_main_thread_during_shutdown(self):
         # bpo-31516: current_thread() should still point to the main thread
         # at shutdown