DO NOT MERGE Handle relative path extraction for PublicVolume

/storage/123-ABC would not extract a valid relative path, we should
error any such requests

Test: atest
android.scopedstorage.cts.host.PublicVolumeHostTest#testAccess_directory
Bug: 159104838

Change-Id: I3a06a23f743c830c722d5bf3126ff370bc32d199
1 file changed