Merge "Use ArrayMap to cache active subscriptions" into main am: 29ee574493 am: 565161fb1a

Original change: https://android-review.googlesource.com/c/platform/packages/apps/Settings/+/2704973

Change-Id: Ic7d2922b78791b84fd7caaee33e91a2ea35acc48
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>