Dialog: Close button not focused if no other focusable elements

[melloware]

Describe the bug

In other Prime libraries like PrimeReact if a Dialog is opened we try and focus the first focusable element. However if there are no focusable elements the dialog Close button should get the focus so you can open a dialog and press ENTER to close it and the close button is focused.

Reproducer

pf-9941.zip

Expected behavior

Dialog close button should receive focus.

PrimeFaces edition

Community

PrimeFaces version

12.0.0

Theme

No response

JSF implementation

All

JSF version

2.3

Java version

11

Browser(s)

ALL