simplify redis code, less redis calls

reflex/state.py

@@ -3182,14 +3182,6 @@ class StateManagerRedis(StateManager):
         "e"  # For evicted events (i.e. maxmemory exceeded)
     )
 
-    # These events indicate that a lock is no longer held
-    _redis_keyspace_lock_release_events: Set[bytes] = {
-        b"del",
-        b"expire",
-        b"expired",
-        b"evicted",
-    }
-
     async def _get_parent_state(
         self, token: str, state: BaseState | None = None
     ) -> BaseState | None:
@@ -3467,20 +3459,16 @@ class StateManagerRedis(StateManager):
                 raise
         async with self.redis.pubsub() as pubsub:
             await pubsub.psubscribe(lock_key_channel)
-            while not state_is_locked:
-                # wait for the lock to be released
-                while True:
-                    if not await self.redis.exists(lock_key):
-                        break  # key was removed, try to get the lock again
-                    message = await pubsub.get_message(
-                        ignore_subscribe_messages=True,
-                        timeout=self.lock_expiration / 1000.0,
-                    )
-                    if message is None:
-                        continue
-                    if message["data"] in self._redis_keyspace_lock_release_events:
-                        break
-                state_is_locked = await self._try_get_lock(lock_key, lock_id)
+            # wait for the lock to be released
+            while True:
+                # fast path
+                if await self._try_get_lock(lock_key, lock_id):
+                    return
+                # wait for lock events
+                _ = await pubsub.get_message(
+                    ignore_subscribe_messages=True,
+                    timeout=self.lock_expiration / 1000.0,
+                )
 
     @contextlib.asynccontextmanager
     async def _lock(self, token: str):