fix(transition): enable ios transition shadow by default (ionic-team#19051)

Author: adamdbradley

core/scripts/testing/scripts.js

@@ -7,6 +7,5 @@
 
   window.Ionic = window.Ionic || {};
   window.Ionic.config = window.Ionic.config || {};
-  window.Ionic.config.experimentalTransitionShadow = true;
 
 })();

core/src/components/content/content.tsx

@@ -302,7 +302,7 @@ export class Content implements ComponentInterface {
     const mode = getIonMode(this);
     const { scrollX, scrollY, forceOverscroll } = this;
 
-    const transitionShadow = (mode === 'ios' && config.getBoolean('experimentalTransitionShadow', false));
+    const transitionShadow = (mode === 'ios' && config.getBoolean('experimentalTransitionShadow', true));
 
     this.resize();