bpo-31516: Skip test_main_thread_during_shutdown() with COUNT_ALLOCS …

bpo-31516: Skip test_main_thread_during_shutdown() with COUNT_ALLOCS … · python/cpython@65d2f8c

Original file line number	Diff line number	Diff line change
`@@ -546,6 +546,7 @@ def f():`
`546`	`546`	`self.assertEqual(err, b"")`
`547`	`547`	`self.assertEqual(data, "Thread-1\nTrue\nTrue\n")`
`548`	`548`
	`549`	`+@requires_type_collecting`
`549`	`550`	`def test_main_thread_during_shutdown(self):`
`550`	`551`	`# bpo-31516: current_thread() should still point to the main thread`
`551`	`552`	`# at shutdown`