Update Chrome 87/88 note about CSS text-decoration-thickness (#28854)

* Added fact Chrome 87-89's text-decoration-thickness support depends on text-decoration-style

Observed in experiment.

* Update css/properties/text-decoration-thickness.json

---------

Co-authored-by: Claas Augner <495429+caugner@users.noreply.github.com>

Author: mincerafter42

css/properties/text-decoration-thickness.json

@@ -17,7 +17,7 @@
                 "version_added": "87",
                 "version_removed": "89",
                 "partial_implementation": true,
-                "notes": "The `text-decoration-thickness` property does not work unless either `text-underline-offset` is set to something other than `auto` or `text-decoration-color` is set to something other than `currentColor`. See [bug 40734940](https://crbug.com/40734940)."
+                "notes": "The `text-decoration-thickness` property has no effect unless `text-underline-offset`, `text-decoration-color`, or `text-decoration-style` are set to a non-initial value. See [bug 40734940](https://crbug.com/40734940)."
               }
             ],
             "chrome_android": "mirror",