Separate fillsParent from deciding orientation

This keep the behavior of commit a930e1ee to avoid orientation
from being affected by the change of mOccludesParent.

But the animation style can still refer to the runtime change of
translucent, e.g. AppTransitionController#findAnimLayoutParamsToken.

Bug: 234328568
Test: ActivityRecordTests#testShouldStartWhenMakeClientActive
Change-Id: If9019dfa6e4a69cd34607f24dfe2d06994fd6f10