[Draft] #2963 Review TRD Hit Pos Uncertainty
Draft MR. QA still going on.
Resolves Redmine issue #2963.
The position uncertainty value of TRD Hits in the HitProducer was set to values we could not directly comprehend or reproduce.
This MR offers a preliminary solution that was achievable in a short time so that it can be part of the next CbmRoot release.