TCCP: Tidy up detail page "other fees" Jinja

[chosak]

This commit tidies up the Jinja logic for "other fees" in the card details page. It has no impact on the visible rendering of the content.

How to test this PR

Running a local server with the latest dataset, here are some pages to check:

• No other fees
• 1 other fee
• 5 other fees (the maximum possible)

Screenshots

No fees	1 fee	5 fees

Checklist

• PR has an informative and human-readable title
• Changes are limited to a single goal (no scope creep)
• Code follows the standards laid out in the CFPB development guidelines

[niqjohnson]

I still can't actually run cf.gov locally to test, but code-wise this looks great. Super slick way to get around the inconsistently named other fee fields. Looks good to merge to me, I can always check when it gets to Beta.