fix(billing_service): change retry condition to handle specific reque… (#12091)

Signed-off-by: -LAN- <laipz8200@outlook.com>
Co-authored-by: Garfield Dai <dai.hai@foxmail.com>

api/services/billing_service.py

 from typing import Optional
 
 import httpx
-from tenacity import retry, retry_if_not_exception_type, stop_before_delay, wait_fixed
+from tenacity import retry, retry_if_exception_type, stop_before_delay, wait_fixed
 
 from extensions.ext_database import db
 from models.account import TenantAccountJoin, TenantAccountRole
     @retry(
         wait=wait_fixed(2),
         stop=stop_before_delay(10),
-        retry=retry_if_not_exception_type(httpx.RequestError),
+        retry=retry_if_exception_type(httpx.RequestError),
         reraise=True,
     )
     def _send_request(cls, method, endpoint, json=None, params=None):

api/services/feature_service.py

 
         cls._fulfill_params_from_env(features)
 
-        if dify_config.BILLING_ENABLED:
+        if dify_config.BILLING_ENABLED and tenant_id:
             cls._fulfill_params_from_billing_api(features, tenant_id)
 
         return features