[SYS] Erase secondary module flash when button is pressed on primary module (#2076)

Co-authored-by: Florian <1technophile@users.noreply.github.com>

main/ZgatewaySERIAL.ino

@@ -149,7 +149,7 @@ void sendHeartbeatAck() {
   SERIALStream->print("{\"type\":\"heartbeat_ack\"}");
   SERIALStream->print(SERIALPost);
   SERIALStream->flush();
-  Log.notice(F("Sent heartbeat ack" CR));
+  Log.trace(F("Sent heartbeat ack" CR));
 }
 
 void SERIALtoX() {

main/main.ino

@@ -1871,6 +1871,14 @@ void blockingWaitForReset() {
         if (level == ACTUATOR_ON) {
           ActuatorTrigger();
         }
+#    endif
+        ledManager.setMode(-1, -1, LEDManager::STATIC, LED_WAITING_ONBOARD_COLOR, -1);
+#    ifdef SecondaryModule
+        // Erase the secondary module config
+        String eraseCmdStr = "{\"cmd\":\"" + String(eraseCmd) + "\"}";
+        Log.notice(F("Erasing secondary module config: %s" CR), eraseCmdStr.c_str());
+        receivingDATA(subjectMQTTtoSYSsetSecondaryModule, eraseCmdStr.c_str());
+        delay(5000);
 #    endif
         // Checking if the flash has already been erased to identify if we erase it or go into failsafe mode
         // going to failsafe mode is done by doing a long button press from a state where the flash has already been erased