[Ongoing call] Don't animate hide of notifs when showing chip

Animating the hide animation for the notification icons while showing
the ongoing call chip causes an unnecessary (and unnecessarily bad)
animation as the icons are hiding _and_ translating

This change uses a no-animate strategy for the hide animation of the
notification icons. Thus, we no longer have clashing animations running
and it looks better.

Test: manual
Test: CollapsedStatusBarFragmentTest
Flag: NONE
Fixes: 302168270
Change-Id: I4bcf2f7cb3532a565eb1e64e6d854ec2c802576a