Height resizing shouldn't execute on Qualtrics elements that are embed using GTM or other methods

The iframe has a specific class, I adjusted the JS for checking if the iframe has this class before adjusting the height, in this way no other Qualtrics embeds will be affected. Since there are sites that have Qualtrics forms embed using this module and feedback plugins embed through GTM.

Hi @javi-er! Your code changes look good! While I haven't been able to replicate the original issue as I don't use GTM, I don't see any harm in adding an extra check to filter out non qualtrics-generated iframes. I tested your MR on a Drupal 10.4 site, and the qualtrics embed still works and the surveys are resized.

Automatically closed - issue fixed for 2 weeks with no activity.