Treat resources without flags as disabled

Also tweaked output to print out which flags finalized which resources
(or didn't finalize them)

Flag: EXEMPTE modifying a script used for finalization
Bug: 376680864
Bug: 390120561
Test: frameworks/base/tools/aapt2/tools/finalize_res.py frameworks/base/core/res/res/values/public-staging.xml frameworks/base/core/res/res/values/public-final.xml
Change-Id: Ie404481b0219091344750ba562fca7c12fbbf5fa