fix(overlays): announce info after opening based on platform

core/src/utils/overlays.ts

@@ -32,6 +32,7 @@ import {
   removeEventListener,
 } from './helpers';
 import { printIonWarning } from './logging';
+import { isPlatform } from './platform';
 
 let lastOverlayIndex = 0;
 let lastId = 0;
@@ -973,18 +974,26 @@ export const createTriggerController = () => {
  * If the overlay is being presented, it prevents focus rings from appearing
  * in incorrect positions due to the transition (specifically `transform`
  * styles), ensuring that when aria-hidden is removed, the focus rings are
- * correctly displayed in the final location of the elements.
+ * correctly displayed in the final location of the elements. This only
+ * applies to Android devices.
+ *
+ * If this solution is applied to iOS devices, then it leads to a bug where
+ * the overlays cannot be accessed by screen readers. This is due to
+ * VoiceOver not being able to update the accessibility tree when the
+ * `aria-hidden` is removed.
  *
  * @param overlay - The overlay that is being animated.
  */
 const hideAnimatingOverlayFromScreenReaders = (overlay: HTMLIonOverlayElement) => {
   if (doc === undefined) return;
 
-  /**
-   * Once the animation is complete, this attribute will be removed.
-   * This is done at the end of the `present` method.
-   */
-  overlay.setAttribute('aria-hidden', 'true');
+  if (isPlatform('android')) {
+    /**
+     * Once the animation is complete, this attribute will be removed.
+     * This is done at the end of the `present` method.
+     */
+    overlay.setAttribute('aria-hidden', 'true');
+  }
 };
 
 /**