svg/dom/svg-root-lengths.html is flaky

[Alexey Proskuryakov]

svg/dom/svg-root-lengths.html flakily fails on Mac:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&showExpectations=true&revision=189152&tests=svg%2Fdom%2Fsvg-root-lengths.html

@@ -7,18 +7,18 @@
 
 TEST COMPLETE
 Initial/default values:
-PASS svg.width.baseVal.value is 200
-PASS svg.height.baseVal.value is 200
+FAIL svg.width.baseVal.value should be 200. Was 0.
+FAIL svg.height.baseVal.value should be 200. Was 0.
 
 Updated relative values:
-PASS svg.width.baseVal.value is 100
-PASS svg.height.baseVal.value is 20
+FAIL svg.width.baseVal.value should be 100. Was 0.
+FAIL svg.height.baseVal.value should be 20. Was 0.
 
 Updated fixed values:
 PASS svg.width.baseVal.value is 150
 PASS svg.height.baseVal.value is 50
 
 viewBox has no effect on top level length resolution.
-PASS svg.width.baseVal.value is 200
-PASS svg.height.baseVal.value is 100
+FAIL svg.width.baseVal.value should be 200. Was 0.
+FAIL svg.height.baseVal.value should be 100. Was 0.

[Alexey Proskuryakov]

I could reproduce locally with this command:

run-webkit-tests svg/dom/svg-root-lengths.html --repeat 1000 --no-build --no-retry --force -f

Marked as flaky in r189457.

[EWS]

Committed 273156@main (ba9ec2f8082f): <https://commits.webkit.org/273156@main>

Reviewed commits have been landed. Closing PR #22878 and removing active labels.

[Radar WebKit Bug Importer]

<rdar://problem/121160020>