Remove the userId before doing authority check in case of cross-profiles uri checks

This is a bug we encountered while trying to delete a document inside
the main user from the private space user using
DocumentsContract#deleteDocument. We were using ACTION_OPEN_DOCUMENT to
launch the DocsUI and the returned uris have userId prefix attached to
them; i.e. “0@com.android.providers.media.documents”.
This userId prefix result in authority mismatch exception: "java.lang.SecurityException: Requested authority 0@com.android.providers.media.documents doesn't match provider com.android.providers.media.documents”
This cl removes the userId before doing the authority check. This is
already being done in the base ContentProvider class https://source.corp.google.com/h/googleplex-android/platform/superproject/main/+/main:frameworks/base/core/java/android/content/ContentProvider.java;drc=1eb58995aeeb8c266f72cd37eed4044d56ea2f20;l=2757

Bug: 394024051
Flag: EXEMPT minor fix

Change-Id: Ieaeb20cadad68292e8a46fbce5b32e58c6b4d337