fix(multipart): fix lint issues, remove tabs, add missing import, and clean comment

Author: nclimaz

tests/unit/test_multipart_413.py

@@ -1,20 +1,19 @@
 import pytest
-from litestar import Litestar
-from litestar.exceptions import HTTPException
+from litestar import Litestar, post
 from starlette.status import HTTP_413_REQUEST_ENTITY_TOO_LARGE
 from litestar.testing import create_test_client
 
-# Define a proper handler at module level
+@post("/upload")
 async def upload_handler(data):
     return {"success": True}
 
 @pytest.mark.anyio
 async def test_oversized_file_returns_413():
     app = Litestar(
         route_handlers=[upload_handler],
-        multipart_form_part_limit=10,  # Small limit to trigger the error
+        multipart_form_part_limit=10,  # small limit to trigger the error
     )
 
     async with create_test_client(app) as client:
-        response = await client.post("/upload", data={"file": "x" * 100})  # Example oversized data
+        response = await client.post("/upload", data={"file": "x" * 100})
         assert response.status_code == HTTP_413_REQUEST_ENTITY_TOO_LARGE