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

@@ -783,6 +783,9 @@ void WLED::initConnection()
 {
   DEBUG_PRINTF_P(PSTR("initConnection() called @ %lus.\n"), millis()/1000);
 
+  #ifdef WLED_ENABLE_DMX_INPUT
+  dmxInput.disable();
+  #endif
   #ifdef WLED_ENABLE_WEBSOCKETS
   ws.onEvent(wsEvent);
   #endif
@@ -811,6 +814,11 @@ void WLED::initConnection()
   if (!WLED_WIFI_CONFIGURED) {
     DEBUG_PRINTLN(F("No connection configured."));
     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) {
       DEBUG_PRINTLN(F("Access point ALWAYS enabled."));
@@ -860,6 +868,10 @@ void WLED::initConnection()
     statusESPNow = espNowOK ? ESP_NOW_STATE_ON : ESP_NOW_STATE_ERROR;
   }
 #endif
+
+  #ifdef WLED_ENABLE_DMX_INPUT
+  dmxInput.enable();
+  #endif
 }
 
 void WLED::initInterfaces()