fix: turn off autofill

[emilyjablonski]

Description

This PR temporarily turns autofill off based on this Slack support issue.

How Can This Be Tested/Reviewed?

Ensure you don't hit the autofill page after already submitting an application.

Author Checklist:

Partially addresses #1016

• Added QA notes to the issue with applicable URLs
• Reviewed in a desktop view
• Reviewed in a mobile view
• Reviewed considering accessibility
• Added tests covering the changes
• Made corresponding changes to the documentation
• Ran yarn generate:client and/or created a migration when required

Review Process:

• Read and understand the issue
• Ensure the author has added QA notes
• Review the code itself from a style point of view
• Pull the changes down locally and test that the acceptance criteria is met
• Either (1) explicitly ask a clarifying question, (2) request changes, or (3) approve the PR, even if there are very small remaining changes, if you don't need to re-review after the updates

[ludtkemorgan]

This works as intended. We are not in a place yet to implement it, but I think autofill would be a good candidate for a feature flag. For now this is our best option