fix(rlcd): wifi crash - use wifi-pinned disabled like other boards

- Crash: wifi0 as esp32-wifi enabled during kernel init conflicts with
  WebServerService AP mode esp_wifi_init() -> ESP_ERR_INVALID_STATE abort
- Fix: use esp32-wifi-pinned status=disabled pattern like ES3C28P, CYD etc
  (all boards have wifi0 disabled). STA starts later via WifiService
  setEnabled, no longer crashes during kernel init. Log shows:
  'Setting DHCP hostname kidsOS-91EC' + 'WiFi radio on' after boot

- Keeps mDNS AP+STA + hostname kidsOS-XXXX

Devices/waveshare-esp32-s3-rlcd/waveshare,esp32-s3-rlcd.dts

@@ -8,6 +8,7 @@
 #include <tactility/bindings/esp32_spi.h>
 #include <tactility/bindings/esp32_i2s.h>
 #include <tactility/bindings/esp32_uart.h>
+#include <tactility/bindings/esp32_wifi_pinned.h>
 #include <tactility/bindings/display_placeholder.h>
 
 / {
@@ -69,6 +70,11 @@
 		pullups;
 	};
 
+	wifi0 {
+		compatible = "espressif,esp32-wifi-pinned";
+		status = "disabled";
+	};
+
 	uart0 {
 		compatible = "espressif,esp32-uart";
 		port = <UART_NUM_0>;