fix(sign_up): temporarily disable recaptcha on create_unauthenticated

[adi-herwana-nus]

Temporarily disable captcha check on unauthenticated user signup.

Preceding operation (creation of new user) is still protected by captcha.
To follow-up with long term solution (merging user creation & enrolment into single request) ASAP.

[Copilot]

Pull request overview

This PR disables the reCAPTCHA check for the unauthenticated enrol-request creation endpoint (Course::EnrolRequestsController#create_unauthenticated), which is part of the course enrolment request flow.

Changes:

• Commented out the verify_recaptcha enforcement in create_unauthenticated.

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[Copilot]

The reCAPTCHA gate in create_unauthenticated has been commented out, which removes the only bot/abuse protection for a publicly accessible endpoint that creates enrol requests and sends emails. This is a security/operational regression (spam enrol requests, mail queue flooding). Please restore the verify_recaptcha check (or gate the bypass behind an explicit config/feature flag limited to non-production environments), and remove the commented-out block once the intended behavior is implemented.

Suggested change

	# unless verify_recaptcha
	# render json: { errors: { recaptcha: t('errors.user.registrations.verify_recaptcha_alert') } },
	# status: :unprocessable_entity
	# return
	# end
	if Rails.env.production? && !verify_recaptcha
	render json: { errors: { recaptcha: t('errors.user.registrations.verify_recaptcha_alert') } },
	status: :unprocessable_entity
	return
	end