Add Safari versions for SVGTRefElement API (#8559)
Add Safari versions for SVGTRefElement API (#8559)

This PR adds real values for Safari (Desktop and iOS/iPadOS) for the `SVGTRefElement` API, based upon manual testing.

Test Code Used: `document.createElementNS('http://www.w3.org/2000/svg', 'tref')`
mdn/browser-compat-data,mdn/browser-compat-data,chrisdavidmills/browser-compat-data,chrisdavidmills/browser-compat-data