RESTRICT AUTOMERGE Fix permission bypass in legacy shortcut

Intent created for Chooser should not be allowed in legacy shortcuts
since it doesn't make sense for user to tap on a shortcut in homescreen
to share, the expected share flow started from ShareSheet.

Bug: 295334906, 295045199
Test: manual
Change-Id: I8d0cbccdc31bd4cb927830e5ecf841147400fdfa