test-device-ping360 fails to turn off motor

I am testing the ping360 with [test-device-ping360.cpp](https://github.com/bluerobotics/ping-cpp/blob/master/test/test-device-ping360.cpp) and it keeps failing to turn off the motors, I got the following output:
```
Test Device initialization: SUCCESS
Test Device type: SUCCESS
Test Device ID: SUCCESS
Test Ping protocol version: SUCCESS
Firmware version: 3.3.8
Test Check 400 transducer messages: SUCCESS
Test Check 400 auto transducer messages: SUCCESS
Test Turn off motor: ERROR
terminate called after throwing an instance of 'std::runtime_error'
what(): Test failed: Turn off motor
Aborted (core dumped)
```

Any suggestions for fixing this?

Start with test/test-device-ping360.cpp and reproduce the Ping360 test, focusing on the Turn off motor step after the successful transducer checks. Trace the device interaction used by that step and compare its behavior with the reported firmware version 3.3.8. Done means the motor-off check passes without the runtime error.

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