Uplift web platform tests for Lightweight FedCM from mozilla folder
These tests rely on the test_driver.select_fedcm_account endpoint that we don't support.
But it sort-of automagically works because we have the wpt-pick-me autoselect behavior pref'd in.
We are going to get rid of that in Bug 1910688.
Differential Revision: https://phabricator.services.mozilla.com/D218098
bugzilla-url: https://bugzilla.mozilla.org/show_bug.cgi?id=1901586
gecko-commit: 8cd6dcd484dfc6bb00832b354ab50f5ec2038fe2
gecko-reviewers: pbz