Don't trust their testing and judgement, get a voltmeter and make your own measurements. An old, weak or worn out 12V battery can cause a multitude of random faults and unrelated errors such as you are having.
i had a dealer give me the same "it's good" response and claimed that the main HV battery was "bad". They were wrong in a big way.
Only a capacity test or specific gravity test would give good confidence about the 12V battery.
Since you have a 2022 model car, chances are that the 12V battery was made in 2021, so it is at least 3 years old. If it has ever been allowed to sit for an extended time with a less-than-full charge, then it has likely suffered sulfation damage that will reduce the capacity. It may appear to be good under their test, but fail or lay down under the load profile of the car.