Prevent sharesheet from previewing unowned URIs

Bug: 261036568
Test: manually via supplied tool (see bug)
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:fa83e125d14e458545086d16f2e7d1051812dabc)
Merged-In: Ib3f5839d00c7cf09bca3b01fc0a8a6f0f4960993
Change-Id: Ib3f5839d00c7cf09bca3b01fc0a8a6f0f4960993
1 file changed