fix(react): use default hover cursor when checkboxes are disabled

[JoshMK]

• CSS adjustment to use the default hover cursor on non-intractable disabled checkboxes

Closes issue: #1339

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[scurker]

These rules are duplicative of the lines below so you only need to include cursor: default once for both the unchecked and checked styles. There should only be a single set of rules for .Checkbox__overlay--disabled.Icon--checkbox-unchecked, .Radio__overlay--disabled.Icon--radio-unchecked

cauldron/packages/styles/forms.css

Lines 445 to 454 in e98d332

	.Checkbox__overlay--disabled.Icon--checkbox-unchecked,
	.Radio__overlay--disabled.Icon--radio-unchecked {
	color: var(--field-icon-unchecked-disabled-color);
	cursor: default;
	}
	.Checkbox__overlay--disabled.Icon--checkbox-unchecked,
	.Radio__overlay--disabled.Icon--radio-unchecked {
	color: var(--field-icon-unchecked-disabled-color);
	}

[scurker]

🎉