[lint] treat non-user getter calls as lint errors with baselines to exempt existing failures

BUG: 195968932
Test: manual with commands like:
m out/soong/.intermediates/frameworks/base/services/backup/services.backup/android_common/lint/lint-report.html

Change-Id: Ifdac375967694bda4ca5949fa3f9ba31dc3b85d8