Apply bounds change on task view change transition

Task view transitions get queued up behind other shell transitions.
After an unfold transition happens, if a task view change transition
is pending, we now include the bounds on the window container transaction.

This largely mitigates the issue around stale task view bounds after
unfolding while the IME is visible. Also worth noting that because the
task view transition gets queued behind the unfold transition, there's
a noticeable delay before the new bounds are applied. To solve this
we should merge the transitions together.

Flag: EXEMPT bug fix
Fix: 390050545
Test: manual
       - have a floating bubble
       - expand and show IME
       - unfold
       - observe bubble has the correct bounds
Change-Id: Ie674f4418a0f579c2ba3d8e0ad553fd3abc4ded4