Refactor test cases for improved readability and consistency

- Adjusted function signatures in various test files to enhance clarity by aligning parameters.
- Updated patching syntax for better readability across test cases.
- Improved formatting and spacing in test assertions and mock setups.
- Ensured consistent use of async/await patterns in async test functions.
- Enhanced comments for better understanding of test intentions.

app/services/playlist.py

@@ -35,10 +35,11 @@ async def _is_current_playlist(session: AsyncSession, playlist_id: int) -> bool:
 
         playlist_repo = PlaylistRepository(session)
         current_playlist = await playlist_repo.get_current_playlist()
-        return current_playlist is not None and current_playlist.id == playlist_id
     except Exception:  # noqa: BLE001
         logger.warning("Failed to check if playlist is current", exc_info=True)
         return False
+    else:
+        return current_playlist is not None and current_playlist.id == playlist_id
 
 
 class PlaylistService:
@@ -199,7 +200,7 @@ class PlaylistService:
         await self.playlist_repo.delete(playlist)
         logger.info("Deleted playlist %s for user %s", playlist_id, user_id)
 
-        # If the deleted playlist was current, reload player to use main playlist fallback
+        # If the deleted playlist was current, reload player to use main fallback
         if was_current:
             await _reload_player_playlist()