[Accessibility][ContextMenu]: Disabled items should be focusable

[jeschu1]

Bug Report

Package version(s): 1.7.2
Browser and OS versions: All

Describe the issue:

Disabled menu items should be focusable so they can be read by screen readers

Actual behavior:

Disabled menu items are skipped

Expected behavior:

Disabled menu items are focusable with an indicator that they can't be actioned

[gokunymbus]

@betrue-final-final is this bug still accurate?

[betrue-final-final]

Yes, this is true. All of our disabled controls should be focusable.