Fix LED Matrix suspend code (#14090)

quantum/led_matrix/led_matrix.c

@@ -460,7 +460,7 @@ void led_matrix_init(void) {
 void led_matrix_set_suspend_state(bool state) {
 #ifdef LED_DISABLE_WHEN_USB_SUSPENDED
     if (state && !suspend_state && is_keyboard_master()) {  // only run if turning off, and only once
-        led_task_effect(0);                                 // turn off all LEDs when suspending
+        led_task_render(0);                                 // turn off all LEDs when suspending
         led_task_flush(0);                                  // and actually flash led state to LEDs
     }
     suspend_state = state;