Merge "Cache summary text to avoid flickering" into tm-dev am: bd4b23ba

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/18328550



Change-Id: I4939c2b72865b636017c1bcdc1d28e6aa773a706
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>