Fix case when handling channel messages

src/Request.php

@@ -1064,8 +1064,8 @@ class Request
                     $requests = DB::getTelegramRequestCount($chat_id, $inline_message_id);
 
                     if ($requests['LIMIT_PER_SEC'] == 0     // No more than one message per second inside a particular chat
-                        && ((($chat_id > 0 || $inline_message_id) && $requests['LIMIT_PER_SEC_ALL'] < 30)       // No more than 30 messages per second globally
-                        || ($chat_id < 0 && $requests['LIMIT_PER_MINUTE'] < 20))        // No more than 20 messages per minute in groups and channels
+                        && ((!is_numeric($chat_id) || $chat_id > 0 || $inline_message_id) && $requests['LIMIT_PER_SEC_ALL'] < 30)       // No more than 30 messages per second globally
+                        || ((!is_numeric($chat_id) || $chat_id < 0) && $requests['LIMIT_PER_MINUTE'] < 20)       // No more than 20 messages per minute in groups and channels
                     ) {
                         break;
                     }