PYTHON-5167 Shield wait() from wait_for cancel

Author: ShaneHarvey

pymongo/lock.py

@@ -84,7 +84,7 @@ def _release_locks() -> None:
 async def _async_cond_wait(condition: Condition, timeout: Optional[float]) -> bool:
     fut = asyncio.ensure_future(condition.wait())
     try:
-        return await wait_for(fut, timeout)
+        return await wait_for(asyncio.shield(fut), timeout)
     except asyncio.TimeoutError:
         await fut
         return False