Update changelog

Change log 4.66v

4.65v (#2251)
1. Department statistic modal window will show department online status. Useful for investigations.
2. Case insensitive will be a global in additional chat variables.
3. Sometimes while logging as other operator did not work and operator was logged out instantly.
4. `vars_encrypted` option should be respected in popup.
5. `If` condition support in bot individualization. https://doc.livehelperchat.com/docs/bot/multiple-languages#setting-translations-for-messages
execute doc/update_db/update_333.sql for update

Department operator stats (#2245)

Update default table

4.62v (#2230)
1. Option to show hidden chat variable directly in the chat window.

Master routing (#2228)
4.61v
Security Fixes
Multiple XSS vulnerabilities were fixed (all required operator login to exploit)
These were minor security issues that couldn't be exploited by anonymous visitors
Reported by:
* Name: Manojkumar Jaganathan (TheWhiteEvil)
* LinkedIn: https://www.linkedin.com/in/manojkumar-j-7ba35b202/
* HackerOne Profile: https://hackerone.com/the-white-evil?type=user
* Company: HackerBro Technologies
* Their website https://www.hackerbro.net
Specific fixes included:
    1. Properly escaping operator names in the dropdown filtering box
    2. Escaping bot usernames in the Telegram module
    3. Escaping operator names in the change owner window
    4. Escaping "Alias nick" field in department assignment modals
    5. Escaping Facebook page "Name" fields
    6. Escaping canned message content in chat window flows
New Features
    1. Added logging capability for chat priority rules application
    2. Added support for passing chat_id and chat_hash parameters
    3. Improved UI to show which siteaccess is being used for translated text in widget themes
execute doc/update_db/update_329.sql for update

Compare only once during script lifecycle

Merge pull request #2222 from LiveHelperChat/master-459
1. Fixed an issue where the assigned operator's statistics were not updated if the chat was auto-assigned but handled by another operator.
2. Optimized database indexing for the online operators widget, improving data fetching speed by 40–50%.
3. Browser notifications now display unread messages instead of just indicating the assigned chat.
4. Improved clarity of explanations in mobile settings.
5. Added support for canned messages in the mobile app.
6. Implemented a workaround for a Chrome bug: Chromium issue 414284085.
7. Added the option to display a custom message for connection issues.
8. Fixed an issue where the widget, when set to embed mode with a popup-on-click action, failed to render. This now properly handles misconfigurations.
9. The foreach loop in REST API calls now supports a {skip_empty_msg} option to ignore empty messages.
10. The dropdown search component now aborts previous API calls when a new one is made.
11. Migrated browser confirm dialogs to modal-based dialogs to resolve a Safari issue where confirm and submit actions were not handled correctly.
12. Improved user experience when scrolling to previous messages.
13. Fixed an issue causing double replacements in bot trigger texts.
14. Added an option to crop visitor-uploaded images to a square in file upload settings.
15. Option in chat list search by chat close time.
16. `lh_transfer` table was not cleaned up in some scenarios.
17. Various minor improvements throughout the system.
execute doc/update_db/update_327.sql for update