Invoke "mailpoet_scripts_admin_before" from the asset controller

[MAILPOET-5118]

mailpoet/lib/AdminPages/AssetsController.php

@@ -109,6 +109,10 @@ class AssetsController {
       ]
     );
     $this->wp->wpSetScriptTranslations('mailpoet_admin', 'mailpoet');
+
+    if ($this->wp->didAction('mailpoet_scripts_admin_before') === 0) {
+      $this->wp->doAction('mailpoet_scripts_admin_before');
+    }
   }
 
   private function getScriptUrl(string $name): string {

mailpoet/lib/WP/Functions.php

@@ -33,6 +33,14 @@ class Functions {
     return call_user_func_array('do_action', func_get_args());
   }
 
+  /**
+   * @param string $hookName
+   * @return int
+   */
+  public function didAction($hookName) {
+    return did_action($hookName);
+  }
+
   public function trailingslashit(string $url) {
     return trailingslashit($url);
   }

mailpoet/views/layout.html

@@ -180,8 +180,6 @@
 
 <% block after_translations %><% endblock %>
 
-<%= do_action('mailpoet_scripts_admin_before') %>
-
 <% if display_docsbot_widget and not is_dotcom_ecommerce_plan() %>
   <%= javascript('lib/analytics.js') %>
   <script type="text/javascript">window.DocsBotAI=window.DocsBotAI||{},DocsBotAI.init=function(c){return new Promise(function(e,o){var t=document.createElement("script");t.type="text/javascript",t.async=!0,t.src="https://widget.docsbot.ai/chat.js";var n=document.getElementsByTagName("script")[0];n.parentNode.insertBefore(t,n),t.addEventListener("load",function(){window.DocsBotAI.mount({id:c.id,supportCallback:c.supportCallback,identify:c.identify,options:c.options});var t;t=function(n){return new Promise(function(e){if(document.querySelector(n))return e(document.querySelector(n));var o=new MutationObserver(function(t){document.querySelector(n)&&(e(document.querySelector(n)),o.disconnect())});o.observe(document.body,{childList:!0,subtree:!0})})},t&&t("#docsbotai-root").then(e).catch(o)}),t.addEventListener("error",function(t){o(t.message)})})};</script>