MDL-74287 media_videojs: skip dynamic loader during install/upgrade.

media/player/videojs/classes/plugin.php

@@ -419,6 +419,9 @@ protected function get_regex_youtube() {
      * @param moodle_page $page The page we are going to add requirements to.
      */
     public function setup($page) {
+        if (during_initial_install() || is_major_upgrade_required()) {
+            return;
+        }
 
         // Load dynamic loader. It will scan page for videojs media and load necessary modules.
         // Loader will be loaded on absolutely every page, however the videojs will only be loaded