Change text for password reset form

What does this MR do and why?

It changes the text of the email input field on the password reset form.

In case FF password_reset_any_verified_email is enabled, the text says "Requires a verified GitLab email address." instead of "Requires your primary GitLab email address.".

The feature was introduced in !119231 (merged) , we enabled the FF by default in !120971 (merged). FF rollout issue: #410038 (closed)

Screenshots or screen recordings

How to set up and validate locally

• Go to Password reset form ( http://localhost:3000/users/password/new )
• Check the help text below the email field

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.

Related to #16311 (closed)