Fix Roi name for b-jet precision tracking monitoring
The Roi now needs to be specified for the monitoring to select the correct tracks. This Roi was incorrectly specified, this fixes that.
Note, none of the CI tests will be sensitive to this change, and will not test it, which is why it was missed the first time, but it is needed as soon as possible for the tier 0.
Fixes ATR-29299
Edited by Mark Sutton