Add failing test for migrating mockwebserver code

[busches]

What's changed?

Opening a draft PR to see if the migration in the test here is something that OpenRewrite can do and wants to take on. If yes, I'm happy to take it on and would love a point in the right direction.

What's your motivation?

Right now when running the UseWiremockExtension recipe you're often left with code that requires manual updates and I'd love to automate that away.

Anything in particular you'd like reviewers to focus on?

Is this something OpenRewrite wants to take on?

Anyone you would like to review specifically?

N/A

Have you considered any alternatives or workarounds?

Manual updates

Any additional context

Nope

Checklist

• I've added unit tests to cover both positive and negative cases
• I've read and applied the recipe conventions and best practices
• I've used the IntelliJ IDEA auto-formatter on affected files