4.48v

1. Mobile notifications will work now for Mobile App. Although correct windows may not open.
2. Chat GPT Flow support In Rest API section. Polling support.
3. Survey page will show only collected items for departments agent is assigned to.
4. Replaceable variables will be supported also in proactive chat invitations.
5. [Telegram] Message edit action support for web UI if visitor edit's it's message.

execute doc/update_db/update_318.sql for update

Full Changelog: 4.47v...4.48v