Fix: Not within a request context (#12723)

### What problem does this PR solve?

ERROR    1819426 Unhandled exception during request
Traceback (most recent call last):
File
"/home/qinling/[github.com/infiniflow/ragflow/api/apps/document_app.py](http://github.com/infiniflow/ragflow/api/apps/document_app.py)",
line 639, in run
    return await thread_pool_exec(_run_sync)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/qinling/[github.com/infiniflow/ragflow/common/misc_utils.py](http://github.com/infiniflow/ragflow/common/misc_utils.py)",
line 132, in thread_pool_exec
return await loop.run_in_executor(_thread_pool_executor(), func, *args)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/asyncio/futures.py", line 287, in __await__
    yield self  # This tells Task to wait for completion.
    ^^^^^^^^^^
  File "/usr/lib/python3.12/asyncio/tasks.py", line 385, in __wakeup
    future.result()
  File "/usr/lib/python3.12/asyncio/futures.py", line 203, in result
    raise self._exception.with_traceback(self._exception_tb)
File "/usr/lib/python3.12/concurrent/futures/thread.py", line 58, in run
    result = self.fn(*self.args, **self.kwargs)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/qinling/[github.com/infiniflow/ragflow/api/apps/document_app.py](http://github.com/infiniflow/ragflow/api/apps/document_app.py)",
line 593, in _run_sync
if not DocumentService.accessible(doc_id,
[current_user.id](http://current_user.id/)):
                                              ^^^^^^^^^^^^^^^
File
"/home/qinling/[github.com/infiniflow/ragflow/.venv/lib/python3.12/site-packages/werkzeug/local.py](http://github.com/infiniflow/ragflow/.venv/lib/python3.12/site-packages/werkzeug/local.py)",
line 318, in __get__
    obj = instance._get_current_object()
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/qinling/[github.com/infiniflow/ragflow/.venv/lib/python3.12/site-packages/werkzeug/local.py](http://github.com/infiniflow/ragflow/.venv/lib/python3.12/site-packages/werkzeug/local.py)",
line 526, in _get_current_object
    return get_name(local())
                    ^^^^^^^
File
"/home/qinling/[github.com/infiniflow/ragflow/api/apps/__init__.py](http://github.com/infiniflow/ragflow/api/apps/__init__.py)",
line 97, in _load_user
    authorization = request.headers.get("Authorization")
                    ^^^^^^^^^^^^^^^
File
"/home/qinling/[github.com/infiniflow/ragflow/.venv/lib/python3.12/site-packages/werkzeug/local.py](http://github.com/infiniflow/ragflow/.venv/lib/python3.12/site-packages/werkzeug/local.py)",
line 318, in __get__
    obj = instance._get_current_object()
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/qinling/[github.com/infiniflow/ragflow/.venv/lib/python3.12/site-packages/werkzeug/local.py](http://github.com/infiniflow/ragflow/.venv/lib/python3.12/site-packages/werkzeug/local.py)",
line 519, in _get_current_object
    raise RuntimeError(unbound_message) from None
RuntimeError: Not within a request context

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

api/apps/kb_app.py

@@ -269,7 +269,8 @@ async def list_kbs():
 @validate_request("kb_id")
 async def rm():
     req = await get_request_json()
-    if not KnowledgebaseService.accessible4deletion(req["kb_id"], current_user.id):
+    uid = current_user.id
+    if not KnowledgebaseService.accessible4deletion(req["kb_id"], uid):
         return get_json_result(
             data=False,
             message='No authorization.',
@@ -277,7 +278,7 @@ async def rm():
         )
     try:
         kbs = KnowledgebaseService.query(
-            created_by=current_user.id, id=req["kb_id"])
+            created_by=uid, id=req["kb_id"])
         if not kbs:
             return get_json_result(
                 data=False, message='Only owner of dataset authorized for this operation.',