Add screenReaderFocusable attribute support

[Irineu333]

The attribute screenReaderFocusable signals, just like focusable, that the element should be focused by the screen reader, even if it does not have content, in this case reading its children ^1

[Irineu333]

From what I understand, the isScreenReaderFocusable is similar to isFocusable, but exclusive to screen readers. Did you understand it in the same way?" @PatrykMis