Make chooser full-width in phone-portrait orientation am: a509ca0b4f

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/IntentResolver/+/24783423

Change-Id: I30e0a4a4c2b9fc3ca1bbb7dc9378d163a9bec560
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>