Rename CaptivePortalLogin for better UX am: 43873b1298

Original change: https://android-review.googlesource.com/c/platform/packages/modules/CaptivePortalLogin/+/2320913

Change-Id: Icdcd932e5d9239c97fe29839f3dd2702e133a263
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>