Merge bubble transition with unfold

This change merges the bubble task view bounds change with the unfold
transition in order to avoid clipped expanded view.

For bubble bar, the task view will switch surfaces after unfolding
so nothing is merged in that case.

Bug: 390050545
Flag: EXEMPT bug fix
Test: atest TaskViewTransitionsTest
Test: atest UnfoldTransitionHandlerTest
Test: manual
       - disable bubble bar flag
       - create a floating bubble in folded state
       - pull up the IME
       - unfold and observe expanded view bounds
Test: repeat steps above with bubble bar flag enabled
Test: repeat steps above with task view repo flag disabled
Change-Id: I22787311159f2940d37b5aaa071c9b05aae15d17