Improve EWS summary string when there are flaky failures in API tests, but no pre-existing test failures on trunk.
e.g.: https://ews-build.webkit.org/#/builders/9/builds/11297 say "Found 0 pre-existing API test failure: ". This string should only be displayed if there are pre-existing API test failures.
Created attachment 382603 [details]
Sample run: https://ews-build.webkit-uat.org/#/builders/4/builds/72
The commit-queue encountered the following flaky tests while processing attachment 382603 [details]:
requestidlecallback/requestidlecallback-document-gc.html bug 203745 (author: email@example.com)
The commit-queue is continuing to process your patch.
Comment on attachment 382603 [details]
Clearing flags on attachment: 382603
Committed r251938: <https://trac.webkit.org/changeset/251938>
All reviewed patches have been landed. Closing bug.