Fix broken web chat - cannot read properties of undefined

[JayDi85]

Current web chat broken and can't process income user messages due error:

TypeError: Cannot read properties of undefined (reading 'toString')

That's PR fix the problem with wrong/undefined group settings for web messages. Now it uses same default values as direct tg messages. New version works fine with it (tg and web messages).

Original error stack:

=== UNHANDLED ERROR ===
[ERROR] 14:00:04 TypeError: Cannot read properties of undefined (reading 'toString')
...
Error:  TypeError: Cannot read properties of undefined (reading 'toString')
    at Object.msg (C:\WORK\xxx\telegram-support-bot\src\middleware.ts:67:10)
    at C:\WORK\xxx\telegram-support-bot\src\users.ts:126:22
    at Object.getOpen (C:\WORK\xxx\telegram-support-bot\src\db.ts:42:3)
    at Object.chat (C:\WORK\xxx\telegram-support-bot\src\users.ts:91:8)
    at C:\WORK\xxx\telegram-support-bot\src\text.ts:51:17
    at Object.getOpen (C:\WORK\xxx\telegram-support-bot\src\db.ts:42:3)
    at ticketHandler (C:\WORK\xxx\telegram-support-bot\src\text.ts:44:8)
    at Socket.<anonymous> (C:\WORK\xxx\telegram-support-bot\src\addons\web.ts:56:26)
    at Socket.emit (node:events:513:28)
    at Socket.emitUntyped (C:\WORK\xxx\telegram-support-bot\node_modules\socket.io\dist\typed-events.js:69:22)

Closes #141

[github-actions]

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