Fix pre-main-jh-pipeline-2024-08-12

What does this MR do and why?

Fix pre-main-jh-pipeline-2024-08-12

Failed job

https://jihulab.com/gitlab-cn/gitlab/-/jobs/15776612

Broken by upstream MR: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/161055

It changed to use user_application_color_mode on devise layout, but JH override it, so failed.

Failed job

https://jihulab.com/gitlab-cn/gitlab/-/jobs/15776765

Broken by upstream MR: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/158789

It added common phrases copy to sign up page.