fix(backend): stale avatar is refetched again under kurigram 2.2.26, profile photos come as chat photos

backend/src/userbot/modules/jobs/handlers/fetch_avatar.py

@@ -1,6 +1,6 @@
 from pyrogram import Client
 from pyrogram.errors import FileIdInvalid, FileReferenceExpired, FileReferenceInvalid
-from pyrogram.types import Photo
+from pyrogram.types import ChatPhoto
 
 from userbot.modules.avatars.repository import get_avatar_file, mark_avatar_downloaded
 from userbot.modules.download import download_bytes
@@ -15,12 +15,9 @@ async def _fresh_file_id(client: Client, owner_id: int, unique_id: str) -> str |
     photo = chat.photo if chat else None
     if photo and photo.big_photo_unique_id == unique_id:
         return photo.big_file_id
-    photos = client.get_chat_photos(owner_id)
-    if photos is None:
-        return None
-    async for item in photos:
-        if isinstance(item, Photo) and item.file_unique_id == unique_id:
-            return item.file_id
+    async for item in client.get_chat_photos(owner_id):
+        if isinstance(item, ChatPhoto) and item.big_photo_unique_id == unique_id:
+            return item.big_file_id
     return None