Setting the title of a PR via our mock Bitbucket server is broken. Fix it, and add a test to validate setting titles.
<rdar://problem/127751416>
Pull request: https://github.com/WebKit/WebKit/pull/28297
Committed 278593@main (98c351128f7e): <https://commits.webkit.org/278593@main> Reviewed commits have been landed. Closing PR #28297 and removing active labels.
Committed 272448.1010@safari-7618-branch (f09def8b0fcc): <https://commits.webkit.org/272448.1010@safari-7618-branch> Reviewed commits have been landed. Closing PR #1278 and removing active labels.