hack: disable dmx receiver while wifi is being activated

This fixes a crash in the dmx receiver. The dmx receiver cannot work while cache is disabled. For some reason activating wifi disables the cache. In theory, the driver is placed in iram and should work, but it doesn't. This might be a bug in the driver.

wled00/wled.cpp

@@ -958,6 +958,9 @@ bool WLED::initEthernet()
 
 void WLED::initConnection()
 {
+  #ifdef WLED_ENABLE_DMX_INPUT
+  dmxInput.disable();
+  #endif
   #ifdef WLED_ENABLE_WEBSOCKETS
   ws.onEvent(wsEvent);
   #endif
@@ -978,6 +981,10 @@ void WLED::initConnection()
   if (!WLED_WIFI_CONFIGURED) {
     USER_PRINTLN(F("No WiFi connection configured."));  // WLEDMM
     if (!apActive) initAP();        // instantly go to ap mode
+    
+    #ifdef WLED_ENABLE_DMX_INPUT
+    dmxInput.enable();
+    #endif
     return;
   } else if (!apActive) {
     if (apBehavior == AP_BEHAVIOR_ALWAYS) {
@@ -1017,6 +1024,10 @@ void WLED::initConnection()
 #else
   wifi_set_sleep_type((noWifiSleep) ? NONE_SLEEP_T : MODEM_SLEEP_T);
 #endif
+
+  #ifdef WLED_ENABLE_DMX_INPUT
+  dmxInput.enable();
+  #endif
 }
 
 void WLED::initInterfaces()