RegionSelector: fix detector-specific unit tests
In general, we do not support all possible geometry configurations in reco (e.g. not all Muon detectors can be configured individually). Hence only toggle the detector flags but not the geometry flags. Also set a proper conditions and geometry tag.
Fix the failing Muon and LAr unit test by configuring the detector geometry.
Fixes ATLASRECTS-7290 and ATLASRECTS-7292.