merge_pr_51482

Add WPT test for relayProtocol and url in RTCIceCandidate constructor.

Differential Revision: https://phabricator.services.mozilla.com/D241709

bugzilla-url: https://bugzilla.mozilla.org/show_bug.cgi?id=1954237
gecko-commit: e68dde36a238bd629b9b477529636eefb726a116
gecko-reviewers: bwc, webrtc-reviewers