menu: toggle Menu Widgets without a full driver reinit too

menu_enable_widgets ("Use Menu Widgets") fired CMD_EVENT_REINIT on change,
reinitialising every driver just to enable/disable the gfx_widgets system.
Its only consumer is the widget-enable block in drivers_init(), which the
new CMD_EVENT_OSD_NOTIFICATION_TOGGLE handler already re-evaluates (it reads
menu_enable_widgets in its want_widgets test). Point this setting at that
command as well, so toggling widgets is instant instead of flashing a
context reinit. Same runtime-widget-lifecycle caveat as the notifications
toggle applies.

Signed-off-by: LibretroAdmin <LibretroAdmin@users.noreply.github.com>

Author: LibretroAdmin

menu/menu_setting.c

@@ -17039,7 +17039,7 @@ static bool setting_append_list(
                   {
             static const setting_desc_t osn_desc_0[] = {
                SDESC_BOOL_ROW_EX(menu_enable_widgets, MENU_WIDGETS_ENABLE,
-                     DEFAULT_MENU_ENABLE_WIDGETS, SD_FLAG_NONE, 0, CMD_EVENT_REINIT,
+                     DEFAULT_MENU_ENABLE_WIDGETS, SD_FLAG_NONE, 0, CMD_EVENT_OSD_NOTIFICATION_TOGGLE,
                      setting_bool_action_left_with_refresh, NULL, NULL, NULL, setting_bool_action_left_with_refresh, setting_bool_action_right_with_refresh, 0),
                SDESC_BOOL_ROW_EX(menu_widget_scale_auto, MENU_WIDGET_SCALE_AUTO,
                      DEFAULT_MENU_WIDGET_SCALE_AUTO, SD_FLAG_NONE, 0, 0,