Bug 1778220 - disable browser_test_zoom.js on Linux_64 & Win for frequent failures. r=intermittent-reviewers,MasterWayZ DONTBUILD

Differential Revision: https://phabricator.services.mozilla.com/D151434

accessible/tests/browser/hittest/browser.ini

@@ -16,3 +16,6 @@ skip-if =
 [browser_test_shadowroot.js]
 [browser_test_zoom_text.js]
 [browser_test_zoom.js]
+skip-if =
+  os == 'linux' && bits == 64 # Bug 1778220
+  os == 'win' # Bug 1778220