Trd unpacker: Fix for incorrect time

During unpacking the relative microslice time was added to the ASIC time with the wrong unit.

Dear @a.bercuci, @p.kaehler,

you have been identified as code owner of at least one file which was changed with this merge request.

Please check the changes and approve them or request changes.

added CodeOwners label

assigned to @p.-a.loizeau

requested review from @p.-a.loizeau

merged

added Reconstruction mCBM labels