fix: always return a list, even if we catch an exception

Author: Sjoeborg

crawl4ai/async_dispatcher.py

@@ -455,8 +455,6 @@ async def run_urls(
 
                 # Update priorities for waiting tasks if needed
                 await self._update_queue_priorities()
-                
-            return results
 
         except Exception as e:
             if self.monitor:
@@ -467,6 +465,7 @@ async def run_urls(
             memory_monitor.cancel()
             if self.monitor:
                 self.monitor.stop()
+            return results
 
     async def _update_queue_priorities(self):
         """Periodically update priorities of items in the queue to prevent starvation"""