Mine will do that the morning after I’ve washed it. Almost always.
If you’ve not noticed a problem with the braking, honestly I wouldn’t worry about it.
I think if you feel there is a problem, you will have to give the supplying dealer opportunity to investigate.
I’ve had my car 3 years- and in that time have been wrongly advised to replace parts on 2 occasions- once i was advised I needed a new clutch ( and that it wasn’t covered under warranty)- when all that was required was gear linkage adjustment, and recently the dealer advised I needed 2 new tyres- I still haven’t been able to find the 2 “ cuts” that the technician found- and neither did the MOT tester I took it to immediately afterwards.
Could be misdiagnosis, could be difference opinion/ judgment- in truth, they are heavily incentivised to replace as much stuff as they can- so they often do so when work isn’t needed.
I wouldn’t trust them at all.