Refa: make RAGFlow more asynchronous 2 (#11689)

### What problem does this PR solve?

Make RAGFlow more asynchronous 2. #11551, #11579, #11619.

### Type of change

- [x] Refactoring
- [x] Performance Improvement

api/apps/connector_app.py

@@ -168,10 +168,12 @@ async def _render_web_oauth_popup(flow_id: str, success: bool, message: str, sou
     status = "success" if success else "error"
     auto_close = "window.close();" if success else ""
     escaped_message = escape(message)
+    #   Drive: ragflow-google-drive-oauth
+    #   Gmail: ragflow-gmail-oauth
+    payload_type = f"ragflow-{source}-oauth"
     payload_json = json.dumps(
         {
-            # TODO(google-oauth): include connector type (drive/gmail) in payload type if needed
-            "type": f"ragflow-google-{source}-oauth",
+            "type": payload_type,
             "status": status,
             "flowId": flow_id or "",
             "message": message,