[Output Switcher] Fix list order for preference am: 7c9c5f29f7

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23710185

Change-Id: I3ac99b1207338bec0fcacc2e1f3d39287ce18be4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>