[Core] Deflake test_async_actor_task_retry in test_network_failure_e2e.py (#51415)

Signed-off-by: Mengjin Yan <mengjinyan3@gmail.com>

Author: MengjinYan

python/ray/tests/test_network_failure_e2e.py

@@ -260,7 +260,7 @@ async def run(self):
       # first attempt
       await self.counter.inc.remote()
       while len(list_tasks(
-            filters=[("name", "=", "AsyncActor.run")])) != 2:
+            filters=[("name", "=", "AsyncActor.run")])) < 2:
         # wait for second attempt to be made
         await asyncio.sleep(1)
       # wait until the second attempt reaches the actor