Right-clicking a construction plane in the browser opens its menu (#1130)

Construction plane rows get a menu: Edit Feature, Delete, Rename, Show/Hide, Find in Timeline, and Group Selected for several planes (#1036).

crates/ui-egui/src/i18n_menu_tests.rs

@@ -49,6 +49,7 @@ fn take(app: &SolveApp, out: &mut BTreeSet<String>) {
     }
     for id in &features {
         take_items(out, &context_menu::items(app, &Target::Sketch { id: *id }));
+        take_items(out, &context_menu::items(app, &Target::Plane { id: *id }));
     }
     for id in &components {
         take_items(out, &context_menu::items(app, &Target::Component { id: *id }));