Consider "similar" change modes the same for promotion purposes

If all the siblings of a change are changing in a similar way
(ie. all ending-up visible or non-visible) then they can be
considered the same mode for promotion (ie. if one child is hide
while the other is close, it is valid to promote).

Bug: 250012839
Test: atest TransitionTests
Change-Id: Iedd12ee0ca6c026848c6c4d3259fef541609f724