Fix empty password submit failure in admin edit user page

What does this MR do and why?

Temporarily fix #1875 (closed), this MR will be reverted when upstream fix version (https://gitlab.com/gitlab-org/gitlab/-/merge_requests/99042 ) is merged

Screenshots or screen recordings

before	after

How to set up and validate locally

1. Set up gitlab in EE premium plan at least
2. go to http://{YOUR_HOST}/admin/application_settings/general and expand Sign up restrictions and turn on password complexity
3. go to http://127.0.0.1:3000/admin/users edit any user
4. submit the form with an empty value of password

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.