Password Requirement: Name/Username/Email

We should be changing the password input field for every instance of GitLab (.com and self-managed) as pointed out in #458441 (comment 1896743006).

Figma link has designs for all registrations.

We should tell the user about any password conditions at the start, which will ultimately help the user to create a more secure account.

Updated copy to replace "Minimum length is 8 characters":

• Cannot include your name, username, or email

Based on the technical details implement name / username exclusion by analogy with common phrases.