LearnDash LMS 4.18.1

* Fix - Resolved an issue where users registered via the Modern registration page would not have their chosen password set.

* Fix - Resolved an issue where LearnDash 3.0 template colors were not being applied to some elements.
* Tweak - Updated functions: `learndash_30_custom_colors`.

Feature

• Feature - New Registration page UI.
• Feature - New Appearance option for registration page, providing the ability to choose between Classic and Modern registration pages.

Update

• Security - Altered the message for the forgot password form provided by LearnDash to be inspecific if the username/email provided is found in the system.
• Tweak - Updated functions: `learndash_registration_output`, `output_registration_success_alert`.
• Tweak - Added functions: `learndash_get_login_form_html`, `learndash_is_initialized`, `learndash_registration_variation`.
• Tweak - Added filters: `learndash_initialization_is_new_install`, `learndash_model_product_interval_message`, `learndash_payment_option_active_gateways`, `learndash_paypal_ipn_checkout_info_text`, `learndash_razorpay_checkout_info_text`, `learndash_registration_forgot_password_html`, `learndash_registration_form`, `learndash_registration_login_form_html`, `learndash_registration_wp_login_form_html`, `learndash_stripe_checkout_info_text`.
• Tweak - Added actions: `learndash_initialization_new_install`, `learndash_registration_successful_before`.
• Tweak - Updated actions: `learndash_registration_form_after`, `learndash_registration_form_before`, `learndash_registration_form_override`, `learndash_registration_successful_after`.
• Tweak - Updated filters, ensuring string as return type: `learndash_payment_button`, `learndash_registration_login_link_redirect`, `learndash_registration_login_form_redirect`, `learndash_registration_errors_after`, `learndash_registration_form_fields_before`, `learndash_registration_form_fields_after`.

Bugfix

• Fix - Corrected the display of checkboxes within the Course builder in WordPress v6.6+.