Add shortcuts in tooltips to the animation editor's play/pause buttons

Shortcuts for these buttons don't make use of the Button shortcut
system, so that they work globally (even if the animation editor is
not focused). Therefore, we need to add the shortcut to the tooltip manually.

editor/animation/animation_player_editor_plugin.cpp

@@ -151,12 +151,16 @@ void AnimationPlayerEditor::_notification(int p_what) {
 			EditorNode::get_singleton()->connect("scene_changed", callable_mp(this, &AnimationPlayerEditor::_find_player));
 
 			add_theme_style_override(SceneStringName(panel), EditorNode::get_singleton()->get_editor_theme()->get_stylebox(SceneStringName(panel), SNAME("Panel")));
+
+			_update_playback_tooltips();
 		} break;
 
 		case EditorSettings::NOTIFICATION_EDITOR_SETTINGS_CHANGED: {
 			if (EditorThemeManager::is_generated_theme_outdated()) {
 				add_theme_style_override(SceneStringName(panel), EditorNode::get_singleton()->get_editor_theme()->get_stylebox(SceneStringName(panel), SNAME("Panel")));
 			}
+
+			_update_playback_tooltips();
 		} break;
 
 		case NOTIFICATION_TRANSLATION_CHANGED:
@@ -1202,6 +1206,14 @@ void AnimationPlayerEditor::_update_name_dialog_library_dropdown() {
 	}
 }
 
+void AnimationPlayerEditor::_update_playback_tooltips() {
+	stop->set_tooltip_text(TTR("Pause/Stop Animation") + " (" + ED_GET_SHORTCUT("animation_editor/stop_animation")->get_as_text() + ")");
+	play->set_tooltip_text(TTR("Play Animation from Start") + " (" + ED_GET_SHORTCUT("animation_editor/play_animation_from_start")->get_as_text() + ")");
+	play_from->set_tooltip_text(TTR("Play Animation") + " (" + ED_GET_SHORTCUT("animation_editor/play_animation")->get_as_text() + ")");
+	play_bw_from->set_tooltip_text(TTR("Play Animation Backwards") + " (" + ED_GET_SHORTCUT("animation_editor/play_animation_backwards")->get_as_text() + ")");
+	play_bw->set_tooltip_text(TTR("Play Animation Backwards from End") + " (" + ED_GET_SHORTCUT("animation_editor/play_animation_from_end")->get_as_text() + ")");
+}
+
 void AnimationPlayerEditor::_ensure_dummy_player() {
 	bool dummy_exists = is_dummy && player && original_node;
 	if (dummy_exists) {
@@ -2054,27 +2066,22 @@ AnimationPlayerEditor::AnimationPlayerEditor(AnimationPlayerEditorPlugin *p_plug
 
 	play_bw_from = memnew(Button);
 	play_bw_from->set_theme_type_variation(SceneStringName(FlatButton));
-	play_bw_from->set_tooltip_text(TTR("Play Animation Backwards"));
 	playback_container->add_child(play_bw_from);
 
 	play_bw = memnew(Button);
 	play_bw->set_theme_type_variation(SceneStringName(FlatButton));
-	play_bw->set_tooltip_text(TTR("Play Animation Backwards from End"));
 	playback_container->add_child(play_bw);
 
 	stop = memnew(Button);
 	stop->set_theme_type_variation(SceneStringName(FlatButton));
-	stop->set_tooltip_text(TTR("Pause/Stop Animation"));
 	playback_container->add_child(stop);
 
 	play = memnew(Button);
 	play->set_theme_type_variation(SceneStringName(FlatButton));
-	play->set_tooltip_text(TTR("Play Animation from Start"));
 	playback_container->add_child(play);
 
 	play_from = memnew(Button);
 	play_from->set_theme_type_variation(SceneStringName(FlatButton));
-	play_from->set_tooltip_text(TTR("Play Animation"));
 	playback_container->add_child(play_from);
 
 	frame = memnew(SpinBox);

editor/animation/animation_player_editor_plugin.h

@@ -211,6 +211,7 @@ class AnimationPlayerEditor : public VBoxContainer {
 	void _set_controls_disabled(bool p_disabled);
 	void _update_animation_list_icons();
 	void _update_name_dialog_library_dropdown();
+	void _update_playback_tooltips();
 	void _blend_edited();
 
 	void _animation_player_changed(Object *p_pl);