action dispatch target (#3494)

- Ensure the candidate keybinding matches the correct context
- Fix context key matching
- I was soooo close
- Dispatch actions on focused node

[[PR Description]]

Release Notes:

- (Added|Fixed|Improved) ...
([#<public_issue_number_if_exists>](https://github.com/zed-industries/community/issues/<public_issue_number_if_exists>)).

crates/gpui2/src/elements/div.rs

@@ -221,20 +221,6 @@ pub trait InteractiveElement: Sized + Element {
 
     /// Add a listener for the given action, fires during the bubble event phase
     fn on_action<A: Action>(mut self, listener: impl Fn(&A, &mut WindowContext) + 'static) -> Self {
-        // NOTE: this debug assert has the side-effect of working around
-        // a bug where a crate consisting only of action definitions does
-        // not register the actions in debug builds:
-        //
-        // https://github.com/rust-lang/rust/issues/47384
-        // https://github.com/mmastrac/rust-ctor/issues/280
-        //
-        // if we are relying on this side-effect still, removing the debug_assert!
-        // likely breaks the command_palette tests.
-        // debug_assert!(
-        //     A::is_registered(),
-        //     "{:?} is not registered as an action",
-        //     A::qualified_name()
-        // );
         self.interactivity().action_listeners.push((
             TypeId::of::<A>(),
             Box::new(move |action, phase, cx| {
@@ -247,6 +233,23 @@ pub trait InteractiveElement: Sized + Element {
         self
     }
 
+    fn on_boxed_action(
+        mut self,
+        action: &Box<dyn Action>,
+        listener: impl Fn(&Box<dyn Action>, &mut WindowContext) + 'static,
+    ) -> Self {
+        let action = action.boxed_clone();
+        self.interactivity().action_listeners.push((
+            (*action).type_id(),
+            Box::new(move |_, phase, cx| {
+                if phase == DispatchPhase::Bubble {
+                    (listener)(&action, cx)
+                }
+            }),
+        ));
+        self
+    }
+
     fn on_key_down(
         mut self,
         listener: impl Fn(&KeyDownEvent, &mut WindowContext) + 'static,