[NOREF] Email Validation Error Message && Use Built-in React USWDS Required Marker in Form Labels

[garyjzhao]

NOREF

Description

Addressing https://cmsgov.slack.com/archives/C01B9TEC65A/p1733169342753359?thread_ts=1733163413.249109&cid=C01B9TEC65A

• use built-in react USWDS required marker in form labels

How to test this change

1. Navigate to the custom solution modals
2. Put a invalid email address and check to see error message pops up
3. Enter a valid email and check to see that the error message goes away

PR Author Checklist

• I have provided a detailed description of the changes in this PR.
• I have provided clear instructions on how to test the changes in this PR.
• I have updated tests or written new tests as appropriate in this PR.
• Updated the Postman Collection if necessary.

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[ClayBenson94]

@garyjzhao Changes look good, but I think snapshots might need to get updated!
https://github.com/CMS-Enterprise/mint-app/actions/runs/12144471382/job/33863890839?pr=1549

[garyjzhao]

@ClayBenson94 pushed up snapshots in the lastest commit

[patrickseguraoddball]

LG