ReplaceUnusedVariablesWithUnderscore produces invalid syntax for typed lambda parameters

[protocol7]

What version of OpenRewrite are you using?

• rewrite-core 8.81.1
• rewrite-migrate-java 3.34.0

What is the smallest, simplest way to reproduce the problem?

@Test
void typedLambdaParameterRenamedToUnderscoreNeedsParentheses() {
  rewriteRun(
      spec -> spec.recipe(new ReplaceUnusedVariablesWithUnderscore()),
      java(
          """
          package com.helloworld;

          public class Main {
            interface Handler {
              String handle(RequestContext context);
            }

            static class RequestContext {}

            Handler route() {
              return (RequestContext rc) -> {
                return "result";
              };
            }
          }
          """,
          spec -> spec.markers(javaVersion(25))));
}

What did you expect to see?

The explicitly typed lambda parameter should remain parenthesized:

Handler route() {
  return (RequestContext _) -> {
    return "result";
  };
}

What did you see instead?

The recipe emits invalid Java:

Handler route() {
  return RequestContext _ -> {
    return "result";
  };
}

What is the full stack trace of any errors you encountered?

The invalid output later failed Java formatting/parsing with errors like:

error: ')' or ',' expected
              RequestContext _ -> {
                            ^
error: not a statement
              RequestContext _ -> {
                             ^