This also enables an AAPT behavior that CTS tests have come to depend on. Small files that compress negatively (get larger) are stored uncompressed. Some CTS tests assume this and try to open these files by mmapping them, which is only possible if they are uncompressed. Bug: 35461578 Test: make aapt2_tests Change-Id: Id622a6150fe72477ad65d67d1bad897a8ee2ffb9