Fix PHP Error - Call to a member function getChat() on null

[MahdiAkrami01]

🐞 Bug Report

Required Information

?	!
Operating system	android 12
PHP Telegram Bot version	0.82.0
PHP version	8.2
MySQL version	none
Update Method	Webhook
Self-signed certificate	no

Summary

in some case maybe users want to edit command and when the commend edited the $this->getMessage() return null and must use $this->getEditedMessage() to fix this issue

How to reproduce

for example send /whois 1234 and then edit the message to /whois 5678

Expected behaviour

it must resend the result base on new message edited

Current behaviour

Error - Call to a member function getChat() on null;
File: vendor/longman/telegram-bot/src/Commands/AdminCommands/WhoisCommand.php; Line: 65;