Set attach consumer after animation finished

Its possible after the animation that attached view's alpha can still be stuck at 0 and never change.
This only happens when the view isn't in range to animate and after onBind() is already called.

Also added flag guarding to the animation as it seems to be forgotten since the big CL change moving
everything to privateProfileManager.

bug: 333506236
Test locally: https://screenshot.googleplex.com/8Kk6rLaczMPwr49 and https://screenshot.googleplex.com/9wXHeNuiCVFEMp6
manually: before https://drive.google.com/file/d/15hSqaUVjwE-lLp6IIv_mqwYbn_ITzR7s/view?usp=sharing
after: https://drive.google.com/file/d/15m7Al5H3vldFgIaQfFyulm1h92_Mgd0H/view?usp=sharing
Flag: ACONFIG com.android.launcher3.Flags.private_space_animation trunkfood

Change-Id: Ifed45f065b536bca5e8878b1bb95d16caf136ed6
2 files changed