text-decoration-skip-ink: link to Safari rendering bug (#29664)

This is a longstanding problem that hasn't been widely complained about,
so it's not a partial. But it did come up in my search when
`text-decoration-skip-ink: all` advanced to Baseline newly available.

Issue: https://webkit.org/b/255159

Author: ddbeck

css/properties/text-decoration-skip-ink.json

@@ -59,7 +59,8 @@
               "opera": "mirror",
               "opera_android": "mirror",
               "safari": {
-                "version_added": "15.4"
+                "version_added": "15.4",
+                "notes": "If the `unicode-range` descriptor applies to the font, then some text decoration may not be skipped (see [bug 255159](https://webkit.org/b/255159))."
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",
@@ -93,7 +94,8 @@
               "opera": "mirror",
               "opera_android": "mirror",
               "safari": {
-                "version_added": "15.4"
+                "version_added": "15.4",
+                "notes": "If the `unicode-range` descriptor applies to the font, then some text decoration may not be skipped (see [bug 255159](https://webkit.org/b/255159))."
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",