Add cursor not-allowed to inputs in disabled fieldset

[Ted Krueger]

🐛 Bug Report

Currently we add the cursor not-allowed to fieldsets when they are disabled but our checkboxes and radio buttons have a more specific selector adding cursor: pointer. We should add cursor: not-allowed when the parent fieldset is disabled.

Also, a good addition would be to add !important to the class cursor--not-allowed

Expected behavior

Disabled fieldsets should not have the cursor pointer on child elements.

Estimates

.5