Skip data stall check on unnecessary network

Except validation required networks, validation will be skipped.
Even there is signal comes from those networks, the validation
will not be proceeded and come back to ValidatedState. Thus, skip
the unnecessary state transition.

Bug: 144488209
Bug: 145275899
Test: atest NetworkStackTests NetworkStackNextTests
Change-Id: I6271cf812bc438882bfba94ca91673471814061c