Git commit modal command (#26405)

Fix KeyBinding::for_action() to use the active focus handle instead of
what was
rendered last.

This makes the UI consistently chose the cmd-escape binding for close
(because escape in the editor is editor::Cancel?),
so force it to be "escape"

Release Notes:

- git: Fixed escape tooltip in commit modal

crates/ui/src/components/keybinding.rs

@@ -29,6 +29,9 @@ impl KeyBinding {
     /// Returns the highest precedence keybinding for an action. This is the last binding added to
     /// the keymap. User bindings are added after built-in bindings so that they take precedence.
     pub fn for_action(action: &dyn Action, window: &mut Window, cx: &App) -> Option<Self> {
+        if let Some(focused) = window.focused(cx) {
+            return Self::for_action_in(action, &focused, window, cx);
+        }
         let key_binding =
             gpui::Keymap::binding_to_display_from_bindings(&window.bindings_for_action(action))
                 .cloned()?;