Fix NameError: move http.server imports to global scope

main.py

@@ -20,8 +20,10 @@ import asyncio
 import collections
 import gc
 import time
+import threading
 from datetime import datetime, timedelta
 from dotenv import load_dotenv
+from http.server import BaseHTTPRequestHandler, HTTPServer
 
 from telegram import Update, InlineKeyboardButton, InlineKeyboardMarkup, constants
 from telegram.ext import (
@@ -422,7 +424,6 @@ class HealthCheckHandler(BaseHTTPRequestHandler):
 
 def run_dummy_server():
     try:
-        from http.server import HTTPServer
         server = HTTPServer(("0.0.0.0", 7860), HealthCheckHandler)
         server.serve_forever()
     except Exception as e:
@@ -449,9 +450,6 @@ def wait_for_internet(host="api.telegram.org", port=443, timeout=60):
     return False
 
 if __name__ == '__main__':
-    from http.server import BaseHTTPRequestHandler
-    import threading
-
     if not TOKEN:
         logger.error("TELEGRAM_BOT_TOKEN topilmadi! Iltimos, Secrets bo'limini tekshiring.")
     else: