Enable captcha element only if `reCaptcha` switch is on

What does this MR do and why?

Hidden captcha row in password reset via email form when recaptcha switch is off

Screenshots or screen recordings

Before

It's still shows captcha element.

After

It will hidden when reCaptcha option is switched off

Screenshots are required for UI changes, and strongly recommended for all other merge requests.

How to set up and validate locally

See here for enable reCaptcha

Numbered steps to set up and validate the change are strongly suggested.

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.