Improve initial display selection and naming.

Displays without a known name property should be labelled "Unknown Display".
The initial display selected should default to one with non-display rects, if possible.

Fixes: 327325638
Test: npm run test:presubmit:quiet

Change-Id: I135dd48ddb3d40e266f27d7692db4f3faab14f9c
4 files changed