AO3-7286 Fix spamban page header to display username and ID

[james-unsworth]

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• Have you added tests for any changed functionality?
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Issue

https://otwarchive.atlassian.net/browse/AO3-7286

Purpose

The spamban confirmation page now displays the username and user ID of the user to be banned.

Credit

James Unsworth (he/him)

[sarken]

Hi, James Unsworth!

Thank you so much for this pull request. Someone will be along to review it soon.

I've updated the Jira issue status to In Review so no one mistakenly creates a duplicate pull request. If you'd like the ability to comment on, assign, and transition issues in the future, you're welcome to create a Jira account! It makes things a bit easier for us on the organizational side if the Full Name on your Jira account either closely matches the name you'd like us to credit in the release notes or includes it in parentheses, e.g. "Nickname (CREDIT NAME)."

Once you've done that (or if you've already done it -- Jira has been unreliable about showing us new accounts in the admin panel lately), you can either reply here or send an email to otw-coders@transformativeworks.org with your account name and email address and we'll set up the permissions for you.

Thanks again for contributing! If you have any questions, you can contact us at the same email address listed above.

[james-unsworth]

Thanks! I created a Jira account under the name James Unsworth, email: jamesunsworth00@gmail.com

[Bilka2]

I sent you a Jira invite that should give you the permissions automatically, please let us know if you have any issues signing up!

[Bilka2]

The change looks good, however it would be nice to add a test for this! If you're looking for inspiration, the test added in #5586 is quite similar, but I can explain more if you have questions, just let me know!