Update handle_network_event to use BrowsingContextActor for HttpRequest (#37263)

- Add browsing_context_actor_name parameter to handle_network_event
- Replace NetworkEventMsg in HttpRequest case with
BrowsingContextActor::resource_available
- Update DevTools caller in lib.rs to pass browsing_context_actor_name

Testing: 
Fixes:
https://github.com/servo/servo/issues/33556#issuecomment-2756544430

---------

Signed-off-by: Uthman Yahaya Baba <uthmanyahayababa@gmail.com>

components/devtools/actors/root.rs

@@ -295,7 +295,7 @@ impl RootActor {
                 sources: false,
                 highlightable: true,
                 custom_highlighters: true,
-                network_monitor: false,
+                network_monitor: true,
             },
         }
     }