Remove userId parameter from exported image URL before sharing

Apps don't generally expect an included userId within content URIs.
Since the URI is not send across to another here (via URI grants)
then it's safe to strip the userId component here.

This covers long screenshots which was missed in a previous patch.

Bug: 291706486
Test: On pixel, set R.string.config_systemImageEditor to
      'com.google.android.apps.photos/.editor.intents.EditActivity'
      take screenshot, EXTEND IT, share, edit -> verify Photos opens
Change-Id: I8610de6edd7fedf7334bcc0e0ff5607f0cc1ef4d