Fix disabled text color on DescriptionListDescription

[Griffin-Sullivan]

Description

In my last PR I was using text.iconColorSubtle to get around the disabled color being to low of a color ratio on a white background. It was causing our a11y testing to fail. Turns out you don't need to pass color contrast ratios on disabled elements so conditionally adding the aria-disabled attribute will cause the tests to pass.

The color change is probably not noticeable enough to anyone but can add an image if requested.

How Has This Been Tested?

Running cypress mock tests

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If you have UI changes

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[lucferbux]

/lgtm

Ok this is great, I would imagine this is gonna happen again soon, we should track this and make sure we port it in other places.

[google-oss-prow]

@lucferbux: changing LGTM is restricted to collaborators

In response to this:

/lgtm

Ok this is great, I would imagine this is gonna happen again soon, we should track this and make sure we port it in other places.

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[Griffin-Sullivan]

@lucferbux I added a comment to the PF6 SPIKE so people will be aware when swapping to PF6.

[ederign]

/lgtm

[google-oss-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ederign, lucferbux

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