Delete sync does not work properly when multiple messages deleted at once

[aahnik]

if the admin will delete multiple messages in the source at once, then only the first message will get deleted in dest, not all. (reported by @ankit-sinha-18)

[aahnik]

Docs : https://docs.telethon.dev/en/latest/quick-references/events-reference.html#messagedeleted

• when multiple messages are deleted, then deleted_ids attribute must be used of the MessageDeleted event.