send AT+MQTTPUB once, topic receive two packets

[LeeGartu]

Answers checklist.

• [X] I have read the documentation ESP-AT Programming Guide and the issue is not addressed there.
• [X] I have used the latest released firmware or have updated my ESP-AT branch (master or release) to the latest version and checked that the issue is present there.
• [X] I have searched the issue tracker for a similar issue and not found a similar issue.

General issue report

ESP32-WROOM sends AT+MQTTPUB once, and other MQTT topic subscribers can receive two packets of information

[ustccw]

@LeeGartu from the second gif, it seems that MQTT client subscribes esp32/test twice, the one is QoS0, the other is QoS2. could you please double check that.