58312 : Display password hint on additional screens

[petitphp]

Show passwords hint on :

• WordPress installation screen
• new user screen
• user profile screen

Trac ticket: https://core.trac.wordpress.org/ticket/58312

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This Pull Request is for code review only. Please keep all other discussion in the Trac ticket. Do not merge this Pull Request. See GitHub Pull Requests for Code Review in the Core Handbook for more details.

[costdev]

Thanks for the PR @petitphp! LGTM 👍

[github-actions]

The following accounts have interacted with this PR and/or linked issues. I will continue to update these lists as activity occurs. You can also manually ask me to refresh this list by adding the props-bot label.

Core Committers: Use this line as a base for the props when committing in SVN:

Props petitphp, audrasjb, joedolson, costdev.

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[github-actions]

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