UI tests: the button test closes the control's menu before the press it checks

The right-click that selects the button also opens its menu at the pointer, so the plain click
that follows could have gone to the menu instead of the button. The test now closes the menu with
Escape and asserts it is closed before clicking; the dialogs test asserts that choosing a menu item
closes it.

crates/ui-egui/tests/it/form_controls.rs

@@ -225,6 +225,11 @@ fn a_button_runs_its_macro_and_cmd_or_right_click_only_selects() {
     h.run_steps(2);
     assert_eq!(h.state().selected_object, Some(ObjRef::new(ObjKind::Control, ids.button)));
     assert_eq!(cell(&h, "H1"), Value::Empty);
+    assert_eq!(h.state().grid.object_menu.map(|(_, kind, id)| (kind, id)), Some(("control", ids.button)));
+    // Escape closes the menu (which would otherwise take the next click at the pointer), then
+    // the selection is dropped, so the click below reaches the button itself.
+    key(&mut h, Key::Escape);
+    assert!(h.state().grid.object_menu.is_none(), "Escape closes the control's menu");
     h.state_mut().selected_object = None;
     // A plain click runs the macro, as one undo step.
     let before = undo_len(&h);
@@ -393,6 +398,7 @@ fn assign_action_and_format_control_dialogs() {
     h.get_by_label("Assign Action…").click();
     h.run_steps(2);
     assert_eq!(h.state().dialog.as_ref().map(|d| d.name.as_str()), Some("assignAction"));
+    assert!(h.state().grid.object_menu.is_none(), "choosing an item closes the menu");
     // The dialog settles its size (and so its place) over the first frames.
     h.run_steps(30);
     let radio = h.get_by_label("Run a command").rect();