Rebuild device_name engine

The solution based on `device_attr` wasn't reliable, so I've replaced it by a sensor.

Solves #1787

esphome/nspanel_esphome_core.yaml

@@ -18,7 +18,7 @@ substitutions:
   friendly_name: ${device_name}
   wifi_timeout: '15'
   ##### DON'T CHANGE THIS ######
-  version: "4.2.6dev"
+  version: "4.3"
   ##############################
 
 ##### External components #####
@@ -3323,7 +3323,6 @@ script:
             else {
               ESP_LOGW(TAG, "  Is setup:    False");
               ESP_LOGW(TAG, "  Is detected: %s", YESNO(disp1->is_detected()));
-              //exit_reparse->execute();
             }
             if (nextion_init->state) {
               ESP_LOGI(TAG, "  Init:        True");