[ews-build.webkit.org] Handle missing commit record

[JonWBedard]

fc82999

[ews-build.webkit.org] Handle missing commit record
https://bugs.webkit.org/show_bug.cgi?id=249625
rdar://103538068

Reviewed by Ryan Haddad.

Not all commits EWS tests have been reported to results.webkit.org. This
may be because merge-queue is ahead of post-commit infrastructure, or because
we collapse build requests on build.webkit.org. We can easily detect this case,
though, an use tip-of-tree as our baseline instead.

* Tools/CISupport/ews-build/results_db.py:
(ResultsDatabase.is_test_expected_to):
(ResultsDatabase.has_commit): Return True if the commit record exists, false if it does not.
* Tools/CISupport/ews-build/steps.py:
(RunWebKitTests.filter_failures_using_results_db):

Canonical link: https://commits.webkit.org/258167@main

2935d3f

Misc	iOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	✅ 🛠 wpe	✅ 🛠 🧪 win
✅ 🧪 bindings	✅ 🛠 ios-sim	✅ 🛠 mac-AS-debug	✅ 🛠 gtk	✅ 🛠 wincairo
✅ 🧪 webkitperl	✅ 🧪 ios-wk2	✅ 🧪 api-mac	✅ 🧪 gtk-wk2
	✅ 🧪 api-ios	✅ 🧪 mac-wk1	❌ 🧪 api-gtk
	✅ 🛠 tv	✅ 🧪 mac-wk2
	✅ 🛠 tv-sim	✅ 🧪 mac-AS-debug-wk2
✅ 🧪 services	✅ 🛠 watch	✅ 🧪 mac-wk2-stress
	✅ 🛠 watch-sim
✅ 🛠 🧪 unsafe-merge

[webkit-early-warning-system]

EWS run on current version of this PR (hash 2935d3f)

Misc	iOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	✅ 🛠 wpe	✅ 🛠 🧪 win
✅ 🧪 bindings	✅ 🛠 ios-sim	✅ 🛠 mac-AS-debug	✅ 🛠 gtk	✅ 🛠 wincairo
✅ 🧪 webkitperl	✅ 🧪 ios-wk2	✅ 🧪 api-mac	✅ 🧪 gtk-wk2
	✅ 🧪 api-ios	✅ 🧪 mac-wk1	❌ 🧪 api-gtk
	✅ 🛠 tv	✅ 🧪 mac-wk2
	✅ 🛠 tv-sim	✅ 🧪 mac-AS-debug-wk2
✅ 🧪 services	✅ 🛠 watch	✅ 🧪 mac-wk2-stress
	✅ 🛠 watch-sim
✅ 🛠 🧪 unsafe-merge

[webkit-commit-queue]

Committed 258167@main (fc82999): https://commits.webkit.org/258167@main

Reviewed commits have been landed. Closing PR #7890 and removing active labels.