[android/passwords] Fix local/account string in save message

Regressed in [1] (the check should've been negated) and wasn't caught
by a single test :/.
Fix the issue and add tests.

[1] https://chromium-review.googlesource.com/c/chromium/src/+/5606422/7/chrome/browser/password_manager/android/password_infobar_utils.cc

Bug: 344609691
Change-Id: I511a13b843296d304e56b1320470f4b91fd1cf1f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5615630


Commit-Queue: Victor Vianna <victorvianna@google.com>
Reviewed-by: Vasilii Sukhanov <vasilii@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1312845}