Dialog role="alertdialog" attribute

[aeirola]

The react Dialog component is useful for implementing different types of dialogs. There are of course many different types of dialogs, but WAI ARIA defines two main types:

• Dialog: https://www.w3.org/TR/wai-aria-1.1/#dialog
• Alert dialog: https://www.w3.org/TR/wai-aria-1.1/#alertdialog

At the moment though, the Dialog component forces the role attribute to be dialog. This means that it cannot be used to implement a WAI ARIA alertdialog type of dialog. Wondering if it would be possible to make the role attribute configurable in some way through props.

[reinink]

Hey! Just letting you know that this has been added: #2709