address issue where mouse down events weren't getting captured after the multiple handlers change

crates/gpui/src/presenter.rs

@@ -485,7 +485,7 @@ impl Presenter {
                 }
 
                 // `event_consumed` should only be true if there are any handlers for this event.
-                let mut event_consumed = false;
+                let mut event_consumed = event_cx.handled;
                 if let Some(callbacks) = valid_region.handlers.get(&mouse_event.handler_key()) {
                     event_consumed = true;
                     for callback in callbacks {
@@ -499,6 +499,8 @@ impl Presenter {
                     }
                 }
 
+                any_event_handled |= event_cx.handled;
+
                 // For bubbling events, if the event was handled, don't continue dispatching.
                 // This only makes sense for local events which return false from is_capturable.
                 if event_consumed && mouse_event.is_capturable() {