Bug 1687790 - add fail-if condition on a11y_checks for browser_perf-calltree-js-events.js. r=jmaher

Depends on D102473

Differential Revision: https://phabricator.services.mozilla.com/D102474

devtools/client/performance/test/browser.ini

@@ -18,6 +18,7 @@ support-files =
 skip-if = (os == 'win' && os_version == '10.0' && bits == 64 && !asan) # Bug 1466377
 [browser_perf-calltree-js-columns.js]
 [browser_perf-calltree-js-events.js]
+fail-if = a11y_checks # bug 1687790 call-tree-item is not accessible
 [browser_perf-calltree-memory-columns.js]
 [browser_perf-console-record-01.js]
 [browser_perf-console-record-02.js]