We need to move text-spacing properties so it can be a Font property and accessible during FontCascade width calculation
<rdar://problem/105722440>
Pull request: https://github.com/WebKit/WebKit/pull/10443
Committed 267224@main (61c1b82983f0): <https://commits.webkit.org/267224@main> Reviewed commits have been landed. Closing PR #10443 and removing active labels.