busscanner: do not scan zones and devices on dsm with apiVersion < 0x303
We rely on new DMS firmware features (activeGroup, defaultGroup).
As discussed: !598 (merged) (comment 39314)
There are more obsolete checks for dsm api version in the code, they can be cleaned too.
This is follow up of work on: #16358 Not sure what is correct case to track time here, I charged it there.