A11Y - Update redirect dialog to use DSCO button

[mgc1194]

The RedirectDialog uses the legacy Button component.
When specified with __useDeprecatedTag and an onClick function, the Button component creates a <div onClick>, or a ‘clickable div’. Clickable divs are an accessibility anti-pattern because they may be styled to look like buttons, but do not communicate their functionality in a way that screenreaders or assistive technology can identify.
We could get rid of the __useDeprecatedTag by applying the same changes as in PR #49339 however, we have a new DSCO Button component that is fully accessible.

This PR:

• Makes the RedirectDialog Class Component into a Functional Component.
• Uses the componentLibrary/button instead of the legacySharedComponents/Button.
• Adds a storybook test for the RedirectDialog.

Links

• jira ticket: A11Y-144

Testing story

Added storybook.

Before	After

Deployment strategy

Accept new eyes-test that may fail with different button styles.

PR Checklist:

• Tests provide adequate coverage
• Privacy and Security impacts have been assessed
• Code is well-commented
• New features are translatable or updates will not break translations
• Relevant documentation has been added or updated
• User impact is well-understood and desirable
• Pull Request is labeled appropriately
• Follow-up work items (including potential tech debt) are tracked and linked

[Erin007]

🎉

[Erin007]

Code changes look good to me! Thanks for modernizing and adding the Story. Would like to see a before and after screenshot if possible just to confirm any style differences, but trust that you looked locally. Thank you!!

[mgc1194]

Code changes look good to me! Thanks for modernizing and adding the Story. Would like to see a before and after screenshot if possible just to confirm any style differences, but trust that you looked locally. Thank you!!

The grey button changes, however, the new design system does not use that style anymore. I would say that is an acceptable change.