Showing cc fields at checkout when paid seats are required

[dparker1005]

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How to test the changes in this Pull Request:

1. Create parent level with no initial payment, no recurring payment, but paid seats with a non-zero seat minimum
2. View checkout for the level. See that CC fields do not show before this fix, but do show afterwards.

Other information:

• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you successfully run tests with your changes locally?

Changelog entry

Enter a summary of all changes on this Pull Request. This will appear in the changelog if accepted.

[jordan-webdev]

Hello, just wanted to let you know that implementing this fixed the issue for me.