VOTE- 3134 replace online and in-person date fields

[SamiraMSadat]

Jira ticket

https://cm-jira.usa.gov/browse/VOTE-3134

Description

Replace double fields with default date fields for online and in person.
Delete the double fields from the system.

Deployment and testing

Post-deploy steps

1. lando retune

QA/Testing instructions

1. Visit http://vote-gov.lndo.site/node/7/edit
2. Set the in-person and online deadline fields.
3. Confirm the specific deadlines display correctly on the page.
4. Confirm the dates translate when switching languages.
5. Clear the specific deadlines and confirm the default deadlines display on the page.

Checklist for the Developer

• A link to the JIRA ticket has been included above.
• No merge conflicts exist with the target branch.
• Automated tests have passed on this PR.
• A reviewer has been designated.
• Deployment and testing steps have been documented above, if applicable.

Checklist for the Peer Reviewers

• The file changes are relevant to the task objective.
• Code is readable and includes appropriate commenting.
• Code standards and best practices are followed.
• QA/Test steps were successfully completed, if applicable.
• Applicable logs are free of errors.