TriggerMenuMT: replace/remove uses of configurableRun3Behavior
To decide if we are running legacy or CA-based job configuration, it is
better to use ComponentFactory.isRun3Cfg()
instead of
configurableRun3Behavior
. This avoids the need to explicitly having to
set configurableRun3Behavior
and also ensures coherency with what type
of configurable the CompFactory
creates.
cc @fpastore