Fix building TelegramException in getCommandsList()

This fix the following TypeError:

Exception::__construct():
Argument php-telegram-bot#2 ($code) must be of type int, Exception given

src/Telegram.php

@@ -303,7 +303,7 @@ public function getCommandsList(): array
                     }
                 }
             } catch (Exception $e) {
-                throw new TelegramException('Error getting commands from path: ' . $path, $e);
+                throw new TelegramException('Error getting commands from path: ' . $path, $e->getCode(), $e);
             }
         }