Fix context key matching

* You need to check all layers of the context stack
* When in command, the context should be based on where focus was (to
  match `available_actions`.

crates/command_palette2/src/command_palette.rs

@@ -311,7 +311,11 @@ impl PickerDelegate for CommandPaletteDelegate {
                         command.name.clone(),
                         r#match.positions.clone(),
                     ))
-                    .children(KeyBinding::for_action(&*command.action, cx)),
+                    .children(KeyBinding::for_action_in(
+                        &*command.action,
+                        &self.previous_focus_handle,
+                        cx,
+                    )),
             ),
         )
     }