Update tests on group comment to check if EP is used

[Rahmon]

Description of the Change

Alternate Designs

Benefits

Possible Drawbacks

Verification Process

Checklist:

• I have read the CONTRIBUTING document.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my change.
• All new and existing tests passed.

Applicable Issues

#2335

Changelog Entry

[felipeelia]

@Rahmon I saw that you've changed the test for testCommentQueryOrderCommentContent() from the foreach testing $comment->elasticsearch to $comments_query->elasticsearch_success. We are keeping that behavior in some other tests, is there any specific reason why you changed it only in this one? I'm fine with one or the other, I'm really just curious to see if I missed something.

For testBasicCommentQuery it seems we still are missing a test for the last \WP_Comment_Query() call. Other than that, this PR looks good!

[Rahmon]

@Rahmon I saw that you've changed the test for testCommentQueryOrderCommentContent() from the foreach testing $comment->elasticsearch to $comments_query->elasticsearch_success. We are keeping that behavior in some other tests, is there any specific reason why you changed it only in this one? I'm fine with one or the other, I'm really just curious to see if I missed something.

For testBasicCommentQuery it seems we still are missing a test for the last \WP_Comment_Query() call. Other than that, this PR looks good!

@felipeelia I've updated to follow the same behavior. Thanks.