Refine the mobile data selection UI am: 964c7d5eaf am: d4b95990e9

Original change: https://android-review.googlesource.com/c/platform/packages/apps/Settings/+/2063556

Change-Id: I00831568c5e8f24676fe640ec7f1756d30a41efc
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>