Subscene icon tooltip update

Subscene tooltip text changed to 'Open in Editor'
closes #9667

editor/scene_tree_editor.cpp

@@ -224,11 +224,11 @@ bool SceneTreeEditor::_add_nodes(Node *p_node, TreeItem *p_parent) {
 	}
 
 	if (p_node == get_scene_node() && p_node->get_scene_inherited_state().is_valid()) {
-		item->add_button(0, get_icon("InstanceOptions", "EditorIcons"), BUTTON_SUBSCENE, false, TTR("Subscene options"));
+		item->add_button(0, get_icon("InstanceOptions", "EditorIcons"), BUTTON_SUBSCENE, false, TTR("Open in Editor"));
 		item->set_tooltip(0, TTR("Inherits:") + " " + p_node->get_scene_inherited_state()->get_path() + "\n" + TTR("Type:") + " " + p_node->get_class());
 	} else if (p_node != get_scene_node() && p_node->get_filename() != "" && can_open_instance) {
 
-		item->add_button(0, get_icon("InstanceOptions", "EditorIcons"), BUTTON_SUBSCENE, false, TTR("Subscene options"));
+		item->add_button(0, get_icon("InstanceOptions", "EditorIcons"), BUTTON_SUBSCENE, false, TTR("Open in Editor"));
 		item->set_tooltip(0, TTR("Instance:") + " " + p_node->get_filename() + "\n" + TTR("Type:") + " " + p_node->get_class());
 	} else {
 		item->set_tooltip(0, String(p_node->get_name()) + "\n" + TTR("Type:") + " " + p_node->get_class());