[ios-simulator] LayoutTest http/tests/security/frameNavigation/sandbox-ALLOWED-top-navigation-with-user-gesture-1.html is a flaky timeout https://build.webkit.org/builders/Apple%20iOS%2011%20Simulator%20Release%20WK2%20(Tests)/builds/52 https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=http%2Ftests%2Fsecurity%2FframeNavigation%2Fsandbox-ALLOWED-top-navigation-with-user-gesture-1.html
Marked test as flaky in https://trac.webkit.org/changeset/222399/webkit