Re-adding logic to hide launcher shortcuts when shade is open

This logic was removed to fix the shortcuts hiding abruptly when the shade
starts to expand, but that caused a regression where they stole touch from
the shade footer buttons.

Test: manual
Bug: 267465887
Flag: NONE
Change-Id: If3290e973c237da6949d4a0c484154ab2d5fc64d
6 files changed