Advanced iFrame Pro 2024.5

- Fix: Completely empty shortcodes [advanced_iframe] throw an error. Now this is covered.

Fix: Hiding the iframe during page transitions was not working.

- Fix: IE does not support .includes. A polyfill was added to fix this
- Fix: Change links targets/href | TinyWebGallery Blog was fixed if you hover over the form! Because at a form change_iframe_links_href="append~?conf=1" does not make sense. A check was added if the elemnent to modify has a href to modify.