Dialog - Controlling close on backdrop & escape key

[Ericlm]

I would really like being able to control whether or not the Dialog element should hide when clicked outside or when the esc key is pressed.

Prior discussions here:

• Adding an option to the Dialog component that prevents it from closing when the escape key is pressed #2353
• disableBackdropClick #875

Issue with the #875 is that we lose all advantages from the Dialog element, like autofocus.

Thank you 😄