Treat <x> and <x>_compressed prebuilt APEXes as being equivalent

When extracting dex files from prebuilt APEXes the build fails if it
finds two or more prebuilt APEXes that could provide the dex files.
This change treats <x> and <x>_compressed APEXes as being the same
and always selects the uncompressed APEX.

Bug: 235284603
Test: m nothing
      # Added TestDuplicateButEquivalentDeapexersFromPrebuiltApexes
      # Failed without this change, works with it.
Change-Id: I805cb9dfa9f590c91585d75c4f4586b212b73d41