Not freezing All Apps during user interactions

Extremely rarely, All Apps will get stuck in a non-updating state even
after the interaction ends.

It would be impractical to try drilling to the root cause of this,
so it's better to just allow All Apps updates while the user interacts
with it.

Bug: 139384936
Change-Id: I2ed7fb052da77a9e47ef9b9aa7800499071b98c3