feat: support backwards invocation

api/core/app/features/rate_limiting/rate_limit.py

@@ -1,7 +1,7 @@
 import logging
 import time
 import uuid
-from collections.abc import Generator
+from collections.abc import Callable, Generator
 from datetime import timedelta
 from typing import Optional, Union
 
@@ -91,7 +91,7 @@ class RateLimit:
 
 
 class RateLimitGenerator:
-    def __init__(self, rate_limit: RateLimit, generator: Union[Generator, callable], request_id: str):
+    def __init__(self, rate_limit: RateLimit, generator: Union[Generator, Callable[[], Generator]], request_id: str):
         self.rate_limit = rate_limit
         if callable(generator):
             self.generator = generator()