Do not create CscCondDbAlg in case of no CSCs
Hi,
during the MT migration of the CSC conditions access (!26583 (merged)), it was not accounted for the possibility of no CSC chambers (for layouts with 2 NSWs). This MR avoids that the CscCondDbAlg
is created in case the current layout does not have any CSC chamber.
This also fixes the failing test_Run3_symmetric_fullChain.sh
ART test in master.
Best, Nico