fix(userbot): encode absent pyrogram raw payloads as empty json

backend/src/userbot/modules/profiles/snapshots.py

@@ -7,12 +7,13 @@ from userbot.modules.capture.context import CaptureContext
 from userbot.modules.groups.repository import insert_chat_history
 from userbot.modules.profiles.parse import snapshot_from_chat
 from userbot.modules.profiles.repository import write_profile
+from userbot.modules.raw_json import raw_json
 
 
 async def save_private(ctx: CaptureContext, chat: Chat) -> bool:
     chat_id = chat.id or 0
     fields, photo_file_id, photo_unique_id = snapshot_from_chat(chat)
-    await write_profile(ctx.pool, ctx.account_id, chat_id, fields, str(chat))
+    await write_profile(ctx.pool, ctx.account_id, chat_id, fields, raw_json(chat))
     if photo_file_id and photo_unique_id:
         await note_avatar(
             ctx.pool, ctx.account_id, chat_id, "peer", photo_unique_id, photo_file_id
@@ -35,7 +36,7 @@ async def save_group(ctx: CaptureContext, chat: Chat) -> None:
         photo_unique_id,
         None,
         datetime.now(UTC),
-        str(chat),
+        raw_json(chat),
     )
     if photo_file_id and photo_unique_id:
         await note_avatar(