🎨(backend) use pylint error names instead of codes in disable comments

Replace pylint error codes with descriptive error names in disable comments
to make suppressed warnings explicit and improve code readability.

src/backend/core/tests/rooms/test_api_rooms_create.py

@@ -2,7 +2,7 @@
 Test rooms API endpoints in the Meet core app: create.
 """
 
-# pylint: disable=W0621,W0613
+# pylint: disable=redefined-outer-name,unused-argument
 from django.core.cache import cache
 
 import pytest

src/backend/core/tests/rooms/test_api_rooms_creation_callback.py

@@ -2,7 +2,7 @@
 Test rooms API endpoints in the Meet core app: creation callback functionality.
 """
 
-# pylint: disable=W0621,W0613
+# pylint: disable=redefined-outer-name,unused-argument
 from django.core.cache import cache
 
 import pytest

src/backend/core/tests/rooms/test_api_rooms_invite.py

@@ -2,7 +2,7 @@
 Test rooms API endpoints in the Meet core app: invite.
 """
 
-# pylint: disable=W0621,W0613
+# pylint: disable=redefined-outer-name,unused-argument
 
 import json
 import random

src/backend/core/tests/rooms/test_api_rooms_participants_management.py

@@ -2,7 +2,7 @@
 Test rooms API endpoints in the Meet core app: participants management.
 """
 
-# pylint: disable=W0621,W0613, W0212
+# pylint: disable=redefined-outer-name,unused-argument,protected-access
 
 import random
 from unittest import mock

src/backend/core/tests/rooms/test_api_rooms_start_recording.py

@@ -2,7 +2,7 @@
 Test rooms API endpoints in the Meet core app: start recording.
 """
 
-# pylint: disable=W0621,W0613
+# pylint: disable=redefined-outer-name,unused-argument
 
 from unittest import mock
 

src/backend/core/tests/rooms/test_api_rooms_stop_recording.py

@@ -2,7 +2,7 @@
 Test rooms API endpoints in the Meet core app: stop recording.
 """
 
-# pylint: disable=W0621,W0613
+# pylint: disable=redefined-outer-name,unused-argument
 
 from unittest import mock
 

src/backend/core/tests/rooms/test_api_rooms_webhook.py

@@ -2,7 +2,7 @@
 Test LiveKit webhook endpoint on the rooms API.
 """
 
-# pylint: disable=R0913,W0621,R0917,W0613
+# pylint: disable=too-many-arguments,redefined-outer-name,too-many-positional-arguments,unused-argument
 import base64
 import hashlib
 import json