Disable the fake multi-BX readout during calibration runs
Description
When enabling the (newish) fake multi-BX readout via the AMC configuration file - as it should be -, the tracking & non-tracking data calibration runs can - and are - screwed up. The Online Software must make sure the feature is disabled whenever relevant and left untouched if the run/scan mode does not require any specific configuration.
More generally, the configuration sources and their precedence should be revisited to deal more cleanly with such features.