Intent to ship: CSS property `hyphenate-character`

[Jonathan Kew]

As of Firefox 98, I intend to turn the CSS-Text property
`hyphenate-character` on by default.

This has been developed behind the
layout.css.hyphenate-character.enabled preference.

This property is implemented as a -webkit-prefixed property in both
Webkit and Blink.

The CSS Working Group recently resolved that the spec for this property
is stable enough to ship unprefixed:
https://github.com/w3c/csswg-drafts/issues/6887#issuecomment-1016667299.

Bug to turn on by default:
https://bugzilla.mozilla.org/show_bug.cgi?id=1751024

This feature was previously discussed in this "Intent to prototype"
thread: https://groups.google.com/a/mozilla.org/g/dev-platform/c/KR8_G8uYzVw

JK