[SB Refactor] Show space between wifi and RAT icon if needed.

Bug: 238425913
Test: with demo mode, display wifi pie next to RAT icon -> verify extra
space
Test: with demo mode, display wifi pie next to mobile triangle without
RAT icon -> verify no extra space
Test: atest MobileIconsViewModelTest WifiViewModelTest

Change-Id: I9db7997b7f260fd24fe33e317d6056f221ba6b6a