[ENR] Only skip hide sensitive anim for showing public

We don't want to play hide sensitive animation when layout is not changed and mShowingPublic is true. Current code is too aggressive and can cause 0 content alpha.

Bug: 414782247
Test: Check hideSensitive animation play and appear animations.
Flag: EXEMPT trivial bugfix
Change-Id: Ia417a27dcb7d26609df5629bae9bbba1785983a0