Merge "Cache summary text to avoid flickering" into tm-dev am: bd4b23ba am: 8186ffc6

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



Change-Id: Iae70f7912c3e746a95f1da3c01215c6ca93753b7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>