Intent to ship: new SVG path API

[Robert Longson]

As of February 4th I intend to turn support for the new SVG 2 path API on by default. It has been developed behind the dom.svg.pathSegment.enabled preference. Status in other browsers is: Chrome has an open issue to implement this: https://issues.chromium.org/issues/40441025. Browser support currently comes from a polyfill: https://github.com/jarek-foksa/path-data-polyfill

Bug to turn on by default: https://bugzilla.mozilla.org/show_bug.cgi?id=1945312.

Standard: https://svgwg.org/specs/paths/#DOMInterfaces

This feature was previously discussed in this "Intent to prototype" thread: https://groups.google.com/a/mozilla.org/g/dev-platform/c/i-F57-F7--4