[shapes] CSS Shapes is marked as widely available but list includes things that are not yet widely available

[jsnkuhn]

Shapes listing includes things that are not yet widely available

rect() and xywh() were added in 2024 newly available

https://developer.mozilla.org/en-US/docs/Web/CSS/basic-shape/rect
https://developer.mozilla.org/en-US/docs/Web/CSS/basic-shape/xywh

shape() is "Limited availability" because it only began getting support this year.

https://developer.mozilla.org/en-US/docs/Web/CSS/basic-shape/shape

so maybe rect() and xywh() need there own listing and shape() needs it's own listing?