Description:
imported/w3c/web-platform-tests/fetch/metadata/script.https.sub.html

This test was added at 226921@main and has been a flaky failure since.

Reproduction steps:
I can reproduce this on 254351@main ToT.

Command: 
run-webkit-tests -1 --iterations 2000 --exit-after-n-failures 1 --exit-after-n-crashes-or-timeouts 1 --debug-rwt-logging --no-retry --force --no-build -f --release  imported/w3c/web-platform-tests/fetch/metadata/script.https.sub.html
History:
https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Ffetch%2Fmetadata%2Fscript.https.sub.html&platform=mac&flavor=wk1&limit=50000

Diff:
--- /Volumes/Data/worker/Apple-Monterey-Release-WK1-Tests/build/layout-test-results/imported/w3c/web-platform-tests/fetch/metadata/script.https.sub-expected.txt
+++ /Volumes/Data/worker/Apple-Monterey-Release-WK1-Tests/build/layout-test-results/imported/w3c/web-platform-tests/fetch/metadata/script.https.sub-actual.txt
@@ -18,7 +18,7 @@
 FAIL Cross-site script: sec-fetch-user null is not an object (evaluating 'value.user')
 PASS Same-origin CORS script
 PASS Same-origin CORS script: sec-fetch-dest
-PASS Same-origin CORS script: sec-fetch-mode
+FAIL Same-origin CORS script: sec-fetch-mode assert_equals: expected "cors" but got "no-cors"
 FAIL Same-origin CORS script: sec-fetch-site assert_equals: expected "same-origin" but got ""
 PASS Same-origin CORS script: sec-fetch-user