[Mullhet] Store credential_origin in PasswordSuggestionDetails.

This string will be used to show the cross domain filling dialog
to the user.

Bug: 333850475
Change-Id: Ic499976ccd21cf005fdea025a71dbf0c9b035275
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5444838
Commit-Queue: Timofey Chudakov <tchudakov@google.com>
Reviewed-by: Ioana Pandele <ioanap@chromium.org>
Reviewed-by: Dmitry Vykochko <vykochko@google.com>
Reviewed-by: Florian Leimgruber <fleimgruber@google.com>
Cr-Commit-Position: refs/heads/main@{#1287951}