Merge "Create a new string to alert unsupported vpn start." into main am: 3c569b5379

Original change: https://android-review.googlesource.com/c/platform/packages/apps/Settings/+/2831551

Change-Id: Ib480a948c3e2c1b68f9e1087c93d563d78792e84
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>