Update esp32-hal-rgb-led.c (#9374)

cores/esp32/esp32-hal-rgb-led.c

@@ -43,5 +43,5 @@ void neopixelWrite(uint8_t pin, uint8_t red_val, uint8_t green_val, uint8_t blue
       i++;
     }
   }
-  rmtWrite(rmt_send, led_data, 24);
+  rmtWriteBlocking(rmt_send, led_data, 24);
 }