Fix to UT LHCbID and suppress 0 ADC UT clusters

Closes !4553 (closed), mirrors fixes in Allen!1607 (merged).

The following is copied from !4453 (merged).

Two fixes to UT decoder:

1. Suppress UT clusters with 0 ADC charges.
2. Use integer to calculate LHCbID instead of float to avoid inconsistent result due to floating point rounding. Related MR: Equivalent Allen MR for LHCbID fix (Allen suppresses 0 ADC charge correctly): Allen!1607 (merged)

changed the description

mentioned in commit 5a00ab10

merged

mentioned in merge request !4528 (merged)