Bug 1634021 - Enable blocking access to storage from tracking resources by default; r=baku,timhuang

Differential Revision: https://phabricator.services.mozilla.com/D73245

browser/components/originattributes/test/browser/browser.ini

@@ -60,6 +60,10 @@ support-files =
   window_redirect.html
   worker_blobify.js
   !/toolkit/content/tests/browser/common/mockTransfer.js
+# We don't want to run tests using BEHAVIOR_REJECT_TRACKER_AND_PARTITION_FOREIGN
+# (5 - aka Dynamic First Party Isolation) yet.
+prefs =
+  network.cookie.cookieBehavior=4
 
 [browser_broadcastChannel.js]
 [browser_cache.js]