[automerger skipped] DO NOT MERGE Add cross-user check for getDefaultSmsPackage(). am: 0abccabf am: bd70751b -s ours am: 64e7a725 -s ours

am skip reason: subject contains skip directive

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/14987346

Change-Id: I03487a82a03cb19aeae804f5f26fd090bdd607cf