Fix jumping taskbar when tapping on nav handle.

We can skip updating taskbar when home visibility changes due to
recents transition animation. For this specific case it was a
superfluous call anyways since taskbar unstashing would be
handled by TaskbarUnstashInputConsumer.

Fixes: 292108880
Bug: 345768019
Test: launch app, quickly tap on nav handle
Flag: com.android.launcher3.enable_scaling_reveal_home_animation
Change-Id: I822071d31d066503c27f527ade46e28a154df249