fix(led): restore all-green fret lights when leaving universal mode

Nav-bar mode switches bypassed the legacy TAB path that called all-on green, so LOOP_LIGHT red LEDs stuck until reboot.

Co-authored-by: Cursor <cursoragent@cursor.com>

UI/UI_Idle.c

@@ -51,6 +51,8 @@ void UI_ReturnToModeSelect(void)
     StartFlag = 0;
     InModeFlag = false;
     AutoBandTop1_Stop();
+    /* 长按回模式选择时，清掉万能 LOOP_LIGHT 残留红灯 */
+    app_tm1629_all_on(LED_COLOR_G);
     CallUI_Idle();
     UI_DrawModeSelectScreen();
 }

UI/UI_global.c

@@ -1011,6 +1011,9 @@ void Draw_Bottom_Bar(uint8_t sel, uint8_t first_back)
 
 void UI_NavBar_Action(uint8_t value)
 {
+	/* 离开万能后 LOOP_LIGHT 停更，须显式恢复全绿（旧 GUI_TAB_INDEX 路径曾做） */
+	app_tm1629_all_on(LED_COLOR_G);
+
 	switch (value)
 	{
 		case UI0902_NAV_UNIVERSAL: