[Desktop] Update strings in update address prompt

The strings are updated for the case where new info is added to the
existing profile.

Screenshot: https://screenshot.googleplex.com/3xbRvatCtfd7gqt.png
Mocks: https://screenshot.googleplex.com/5xVJRvFfHuZtanK.png
Bug: 430251379
Change-Id: I5b7f6914dad936d557630fb512bee77695e16f21
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6788168
Reviewed-by: Jan Keitel <jkeitel@google.com>
Commit-Queue: Vidhan Jain <vidhanj@google.com>
Reviewed-by: Florian Leimgruber <fleimgruber@google.com>
Cr-Commit-Position: refs/heads/main@{#1493443}