Frontend (admin area) to allow remember me to be disabled

What does this MR do and why?

Describe in detail what your merge request does and why.

Part of https://gitlab.com/gitlab-org/gitlab/-/issues/369133

Allows the new application setting to be toggled via Admin area. This feature will be useful along with a reduced session time for customers with increased compliance requirements around session expiration.

• Frontend for removing the checkbox from user-facing pages: !119244 (merged)
• Backend to ensure users aren't remembered when this setting is disabled: !119324 (merged)

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.

1. Sign-in as an admin user.
2. Navigate to Admin area -> Settings -> General -> Account and limit
3. Find 'Remember me' in the middle of the section next to 'Session duration (minutes)'.
4. Toggle and save.

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.