fix: show submit button when broker agency is selected

[bbodine1]

PR Checklist

Please check if your PR fulfills the following requirements:

• The title follows our guidelines
• Tests for the changes have been added (for bug fixes/features), and they use let helpers and before blocks.
• For all UI changes, there is Cucumber coverage.
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PR Type

What kind of change does this PR introduce?:

• Bugfix
• Feature (requires Feature flag)
• Data fix, Migration, or Report (inert code, no impact until run)
• Refactoring (no functional changes, no API changes)
• Build related changes
• CI related changes
• Dependency updates (e.g., add a new gem or update to a version)

What is the ticket # detailing the issue?

Ticket: https://www.pivotaltracker.com/story/show/188747557

A brief description of the changes:

Current behavior:
Clicking on broker agency select button does not show the submit button

New behavior:
Clicking on broker agency select button shows the submit button

Feature Flag

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Variable name:

• DC
• ME

Additional Context

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