Merge "Added KEY_VONR_ENABLED_BOOL to obtain VoNR availability status" into sc-v2-dev am: 7f809bda12 am: 782506f61c

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/16259269

Change-Id: I20b4111b21ea17e7502745974b5bc93710d79c43