Prevent overlayable resources from being obfuscated

Once the build process finds one overlayable resource entry is not in
the list of collapse name exemption, the build process outputs the
resource name automatically and gives a warning message to notify the
developers.

Bug: 228192695

Test: atest aapt2_test
Change-Id: I989b75343d803b059c902baa088590fce7237211