Stride: closing bracket on highlighted text removes the hightlighted text

In Stride we handle the brackets as subslots. Therefore, when a closing bracket is typed, the keyboard hit is ignored and no closing bracket is added "alone" or with an opening counterpart (only opening brackets are adding brackets).

If a text is highlighted and a closing bracket is typed, it will remove the selection and do nothing. Since we don't add closing brackets, it should rather keep the selection or wrap the selected text with brackets.