1668618 - Phabricator emails: send email when Lando makes changes to patch after landing

Status: NEW

(Conduit :: Phabricator, enhancement, P3)

Description

[Mitchell Hentges [:mhentges] 🦀]

In some cases (e.g.: code formatting), Lando will adjust a patch before landing.
It is useful for authors and reviewers to know when this happens in case it has unexpected changes. Giving them a heads up will allow them to check the diff to ensure that there aren't surprises.

If Lando adjusts a patch before landing:

• The "<user> has landed a patch" email for reviewers should include a section explaining that Lando changed the patch with a link to the diff
• The author should receive an extra email explaining that Lando changed their patch with a link to the diff

If Lando did not adjust the patch:

• The "<user> has landed a patch" email should still go to reviewers, just without the extra Lando-specific section
• The author should not be sent an email. (They should not a receive a "<user> has landed a patch" email, because they triggered that action, and there's no new information).