gh-107895: Fix test_asyncio.test_runners when run it in CPython's "development mode" (GH-108168)

Author: xncbf

Lib/test/test_asyncio/test_runners.py

@@ -101,11 +101,14 @@ async def main(expected):
             loop = asyncio.get_event_loop()
             self.assertIs(loop.get_debug(), expected)
 
-        asyncio.run(main(False))
+        asyncio.run(main(False), debug=False)
         asyncio.run(main(True), debug=True)
         with mock.patch('asyncio.coroutines._is_debug_mode', lambda: True):
             asyncio.run(main(True))
             asyncio.run(main(False), debug=False)
+        with mock.patch('asyncio.coroutines._is_debug_mode', lambda: False):
+            asyncio.run(main(True), debug=True)
+            asyncio.run(main(False))
 
     def test_asyncio_run_from_running_loop(self):
         async def main():