refactor: port reqparse to Pydantic model (#28949)

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

api/extensions/ext_redis.py

@@ -3,7 +3,7 @@ import logging
 import ssl
 from collections.abc import Callable
 from datetime import timedelta
-from typing import TYPE_CHECKING, Any, Union
+from typing import TYPE_CHECKING, Any, ParamSpec, TypeVar, Union
 
 import redis
 from redis import RedisError
@@ -245,7 +245,12 @@ def init_app(app: DifyApp):
     app.extensions["redis"] = redis_client
 
 
-def redis_fallback(default_return: Any | None = None):
+P = ParamSpec("P")
+R = TypeVar("R")
+T = TypeVar("T")
+
+
+def redis_fallback(default_return: T | None = None):  # type: ignore
     """
     decorator to handle Redis operation exceptions and return a default value when Redis is unavailable.
 
@@ -253,9 +258,9 @@ def redis_fallback(default_return: Any | None = None):
         default_return: The value to return when a Redis operation fails. Defaults to None.
     """
 
-    def decorator(func: Callable):
+    def decorator(func: Callable[P, R]):
         @functools.wraps(func)
-        def wrapper(*args, **kwargs):
+        def wrapper(*args: P.args, **kwargs: P.kwargs):
             try:
                 return func(*args, **kwargs)
             except RedisError as e: