Fix hover color for red delete account button

[bjester]

Summary

Description of the change(s) you made

• Fixes the hover state for the account deletion CTA

Manual verification steps performed

1. Logged in as user@a.com with password a
2. Deleted the account's sole channel
3. Navigated to Settings
4. Observed button's hovered state

Screenshots (if applicable)

Screencast.from.04-22-2024.02.36.16.PM.webm

Does this introduce any tech-debt items?

Not directly. We can replace the CSS var that Vuetify generates based on the error color with darken utilities if/when KDS has them. Currently no red color darker than the error color exists in KDS' palette.

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Reviewer guidance

How can a reviewer test these changes?

Are there any risky areas that deserve extra testing?

References

Closes #4529

Comments

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Contributor's Checklist

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• If this is an important user-facing change, PR or related issue the CHANGELOG label been added to this PR. Note: items with this label will be added to the CHANGELOG at a later time
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Reviewer's Checklist

This section is for reviewers to fill out.

• Automated test coverage is satisfactory
• PR is fully functional
• PR has been tested for accessibility regressions
• External dependency files were updated if necessary (yarn and pip)
• Documentation is updated
• Contributor is in AUTHORS.md

[akolson]

LGTM! Thanks @bjester!

[AlexVelezLl]

LGTM!