Report folding features to letterboxed apps.

Folding features were filtered out from letterboxed apps because we
assumed that letterboxed apps did not want to optimize. We have found
apps do want to support folding features but may also request fixed
orientation for their experience. We are removing the filter so that
letterboxed apps will get folding feature information.

Bug: 262900133
Test: Manual - open the samples and check if folding features report.
Change-Id: I427f0bc23f00d245c5093c75f13c9e533209362e