Update TelegramBot.php

[blackg820]

use lang of the user

[jacklul]

This can be simplified:

    public function processUpdate(Update $update): ServerResponse
    {
-       Language::set(Language::getDefaultLanguage()); // Set default language before handling each update
+       $lang_code = null;
+       $content = $update->getUpdateContent();
+
+       if ($content && ($from = $content->getFrom())) {
+           $lang_code = $from->getLanguageCode();
+       }
+
+       if (empty($lang_code)) {
+           $lang_code = Language::getDefaultLanguage();
+       }
+
+       Language::set($lang_code);
        
        return parent::processUpdate($update);
    }

Just keep in mind that currently there are no translations other than English.