Harden async transport destructor loop handling

Co-authored-by: Shri Sukhani <shrisukhani@users.noreply.github.com>

Author: cursoragent

hyperbrowser/transport/async_transport.py

@@ -33,11 +33,8 @@ async def __aexit__(self, exc_type, exc_val, exc_tb):
     def __del__(self):
         if not self._closed:
             try:
-                loop = asyncio.get_event_loop()
-                if loop.is_running():
-                    loop.create_task(self.client.aclose())
-                else:
-                    loop.run_until_complete(self.client.aclose())
+                loop = asyncio.get_running_loop()
+                loop.create_task(self.client.aclose())
             except Exception:
                 pass