9.3 Presentational Roles Conflict Resolution: Change focusable to focused

[JAWS-test]

Presentational Roles Conflict Resolution:

If an element is focusable ... user agents MUST ignore the presentation role and expose the element with its implicit role, in order to ensure that the element is operable.

I suggest changing "focusable" to "focused" since role=presentation should only be ignored if the element receives focus. The fact that it is focusable should not cause role=presentation to be ignored, as this can cause errors as long as the element does not receive focus. E.g. that their entire text content is used as a group label.

See: FreedomScientific/standards-support#497 and FreedomScientific/standards-support#507