Merge pull request #66047 from Rindbee/improve-TabContainer

Make the inner `TabBar` in a `TabContainer` behave like it is in a `Container`

scene/gui/tab_container.cpp

@@ -519,12 +519,12 @@ void TabContainer::_refresh_tab_names() {
 }
 
 void TabContainer::add_child_notify(Node *p_child) {
+	Container::add_child_notify(p_child);
+
 	if (p_child == tab_bar) {
 		return;
 	}
 
-	Container::add_child_notify(p_child);
-
 	Control *c = Object::cast_to<Control>(p_child);
 	if (!c || c->is_set_as_top_level()) {
 		return;