JetTagCalibration: migrate trigger use-case to CA
Migrate the trigger "scheme" of JetTagCalibConfig to CA-based
configuration. Based on the comments, this had been attempted before.
For it to work one needs to make use of appendCAtoAthena in the
trigger menu code, but take care of handling the main algorithms
separately.
Delete the unused ConfigFlags.BTagging.Run3NewTrigTaggers flag
and remove the work-around from runHLT_standalone.py as now everything
is setup correctly within the bjet trigger menu sequence.
Finally, also cleanup the offline use-case by using
addFoldersSplitOnline which handles the connection names correctly.
cc @cnass