update WIFI_PS_MODEM to WIFI_PS_MAX_MODEM in ESP32

Author: Luc

esp3d/config.h

@@ -30,7 +30,7 @@
 #include "FS.h"
 #include "SPIFFS.h"
 #define WIFI_NONE_SLEEP WIFI_PS_NONE
-#define WIFI_MODEM_SLEEP WIFI_PS_MODEM
+#define WIFI_MODEM_SLEEP WIFI_PS_MAX_MODEM
 #define WIFI_PHY_MODE_11B WIFI_PROTOCOL_11B
 #define WIFI_PHY_MODE_11G WIFI_PROTOCOL_11B | WIFI_PROTOCOL_11G
 #define WIFI_PHY_MODE_11N WIFI_PROTOCOL_11B | WIFI_PROTOCOL_11G | WIFI_PROTOCOL_11N