Add interactive check to ready event handler

If HTMX is imported in a module the readyState is "interactive"
so the extension processing happens too late. This would fix it.

src/htmx.js

@@ -3584,7 +3584,7 @@ return (function () {
         //====================================================================
 
         function ready(fn) {
-            if (getDocument().readyState !== 'loading') {
+            if (getDocument().readyState !== 'loading' && getDocument().readyState !== 'interactive') {
                 fn();
             } else {
                 getDocument().addEventListener('DOMContentLoaded', fn);