Fix test_valid_characters_handling

Signed-off-by: Madhav Kandukuri <[email protected]>

Author: madhav165

tests/unit/mcpgateway/test_admin.py

@@ -1284,7 +1284,7 @@ async def test_valid_characters_handling(self, mock_request, mock_db):
         with patch.object(ResourceService, "register_resource", new_callable=AsyncMock) as mock_register:
             result = await admin_add_resource(mock_request, mock_db, "test-user")
 
-            assert isinstance(result, RedirectResponse)
+            assert isinstance(result, JSONResponse)
 
             # Verify data was preserved
             call_args = mock_register.call_args[0]