Only bring side to top when split visible

We did some error handle on startAnimation to exit split by some
exception case. However, we should only bring side to top when
exit only when split is visible case. If split is background,
we should always do not bring side to top.

Fix: 287002454
Test: manual
Test: pass existing tests
Change-Id: Id8835408ffa1bc0e8736659956e20e819a53627a