[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
Bug: 392614656
Test: Check hideSensitive animation play and appear animations.
Flag: EXEMPT trivial bugfix
(cherry picked from commit e93d4b015c283e55cb08d68a499aab41f03e1272)
Cherrypick-From: https://googleplex-android-review.googlesource.com/q/commit:323542be0bb081ba81568c49c73e4e307345d6e6
Merged-In: Ia417a27dcb7d26609df5629bae9bbba1785983a0
Change-Id: Ia417a27dcb7d26609df5629bae9bbba1785983a0