Fix test_fast_api.py mocks to match new run_async signature

Author: timof1308

tests/unittests/cli/test_fast_api.py

@@ -125,6 +125,7 @@ async def dummy_run_async(
     session_id,
     new_message,
     state_delta=None,
+    request_state=None,
     run_config: Optional[RunConfig] = None,
     invocation_id: Optional[str] = None,
 ):
@@ -1074,9 +1075,10 @@ async def run_async_with_artifact_delta(
       invocation_id: Optional[str] = None,
       new_message: Optional[types.Content] = None,
       state_delta: Optional[dict[str, Any]] = None,
+      request_state: Optional[dict[str, Any]] = None,
       run_config: Optional[RunConfig] = None,
   ):
-    del user_id, session_id, invocation_id, new_message, state_delta, run_config
+    del user_id, session_id, invocation_id, new_message, state_delta, request_state, run_config
     yield Event(
         author="dummy agent",
         invocation_id="invocation_id",