Fix pipeline failures about member.rb

What does this MR do and why?

Related failed jobs https://jihulab.com/gitlab-cn/gitlab/-/jobs/4189456 and https://jihulab.com/gitlab-cn/gitlab/-/jobs/4189453

Related to MR !558 (merged)

We override enforce_cap? in jh/app/models/jh/namespaces/free_user_cap/standard.rb. So those tests failed. Skip it to fix the pipeline.

Screenshots or screen recordings

Screenshots are required for UI changes, and strongly recommended for all other merge requests.

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.