Replace GET form with link for regenerating backup codes

[aduth]

🎫 Ticket

Supports LG-12716

🛠 Summary of changes

Updates the backup codes regenerate confirmation screen primary button to use a link (<a href="...">) in place of a <form action="..." method="get"><button>.

This is related to the comment at #10088 (comment), where it's theorized there may be misbehaving browser versions which incorrectly handle the form submission. By using an anchor tag link, it's hoped this resolves the unexpected requests we're seeing to the route planned for removal in #10088.

Related Slack thread: https://gsa-tts.slack.com/archives/C05MGJ72GU9/p1713455028604359

This also includes minor refactoring to use common conventions for rendering buttons and status pages.

📜 Testing Plan

Verify there is no regression in the behavior of regenerating backup codes.

1. Go to http://localhost:3000
2. Sign in
3. From account dashboard, click "Get codes" if you don't already have backup codes
4. Once you have backup codes, click "Get new codes" from the account dashboard
5. Observe you still see the confirmation screen with primary "Yes, regenerate codes" primary and "Cancel" secondary buttons
6. Click either/both buttons and verify you're redirected as expected

👀 Screenshots

There's no visual changes expected.

Screenshot for reference:

[aduth]

I wasn't expecting to have to do quite the refactoring entailed through 255566c, but as evidenced by the previous build failure and explained in the extended commit description, the new abstraction for ButtonComponent url / method options broke some assumptions for how action expected to receive its parameters. But these were almost always perfect use-cases for the abstraction that's now implemented, so fixing entailed refactoring to use the new abstraction.

[zachmargolis]

Looks like on this branch, after these changes, there are 26 action: usages left, would we consider removing all of them in a follow-up PR?

identity-idp:aduth-backup-code-s-form-link> git grep -A 3 ButtonComponent.new -- app | grep action: | wc -l
      26

[aduth]

Yeah I can! I actually manually un-edited some additional files since they weren't strictly required to update, so as to keep review simpler. But definitely want to get everything migrated over.

[aduth]

Follow-up at #10468

[kevinsmaster5]

LGTM. Tested locally with commit e15505b