fix: update

src/application/commands/set_avatar.py

@@ -23,8 +23,12 @@ class SetAvatarCommand:
         self._cache = cache
         self._s3 = s3
 
+    @transactional
+    async def _load_user(self, user_id: str) -> UserEntity:
+        return await self._unit_of_work.user_repository.get_user_by_id(user_id)
+
     async def __call__(self, user_id: str, image_bytes: bytes) -> tuple[UserEntity, int]:
-        prior = await self._unit_of_work.user_repository.get_user_by_id(user_id)
+        prior = await self._load_user(user_id)
         old_link = prior.avatar_link
         try:
             webp_bytes = image_bytes_to_webp(image_bytes)