Rectangle's clip does not taking to account radius

Setting a Rectangle's clip property to true does not account for the radius property. As a result, child items may still be drawn outside the parent's visible rounded shape.

In my example:

• I have a Window containing a Rectangle with radius set to half its width (making it circular)

• The parent Rectangle has two child rectangles

• Despite setting clip to true on the parent, both child rectangles are still drawn outside the parent's circular visual boundary

I expected child items to be constrained within the parent's visible shape (including rounded corners), not just its rectangular bounds.