CI started to flake for cloud-web tasks with `Preferences are not available` error.

The error however is thrown from js-yaml library when the browser fails to start the app and all the tests in the task fail.

JavaScript error: http://localhost:7777/835.d03e6841921b57a3052c.mjs, line 2: TypeError: can't access property "push", e.documents is undefined 

Links:

• https://parsley.corp.mongodb.com/evergreen/10gen_compass_main_test_web_sandbox_test_web_sandbox_firefox_2_patch_3d10abea1e29e710187d1c3d678ab39ac6aee0d0_69ca474e08dd120007d0fcad_26_03_30_09_50_08/0/task?bookmarks=0,8865,10473
• js-yaml cause