Revert "Do not send updates for disabled displays."

This reverts commit 3175300106386093b5b7f2d945ebce1bd051f065.

Reason for revert: Breaking roboelectric suw tests with an NPE accessing displayids() in shadowdisplaymanager

Bug: 235541208
Change-Id: Ib760b5b9a477eb3c8516f01614afe8192a6e597b
7 files changed