Make captcha_modal.vue work in JH

app/assets/javascripts/captcha/init_recaptcha_script.js

 // NOTE: This module will be used in https://gitlab.com/gitlab-org/gitlab/-/merge_requests/52044
 import { memoize } from 'lodash';
 
-export const RECAPTCHA_API_URL_PREFIX = 'https://www.google.com/recaptcha/api.js';
+export const RECAPTCHA_API_URL_PREFIX = window.gon.recaptcha_api_server_url;
 export const RECAPTCHA_ONLOAD_CALLBACK_NAME = 'recaptchaOnloadCallback';
 
 /**

lib/gitlab/gon_helper.rb

@@ -21,6 +21,8 @@ module Gitlab
         gon.sentry_environment   = Gitlab.config.sentry.environment
       end
 
+      gon.recaptcha_api_server_url = ::Recaptcha.configuration.api_server_url
+      gon.recaptcha_sitekey      = Gitlab::CurrentSettings.recaptcha_site_key
       gon.gitlab_url             = Gitlab.config.gitlab.url
       gon.revision               = Gitlab.revision
       gon.feature_category       = Gitlab::ApplicationContext.current_context_attribute(:feature_category).presence