Modify text dynamically underneath the password field based on password strength settings

**Is your feature request related to a problem? Please describe.**
When changing the password strength requirements in the form editor, the explanation text doesn't update.

**Describe the solution you'd like**
While you can manually change it, it'd be nice if it automatically updated based on the new settings (weak, minimum password length, etc)

Need to somehow fix the editor when editing the Password field, otherwise in detached mode we likely can't accurately detect and modify the explanatory text. https://github.com/gocodebox/lifterlms/issues/2644