[web] support iframe aria-hidden attribute

Author: p-mazhnik

flutter_inappwebview_platform_interface/lib/src/in_app_webview/in_app_webview_settings.dart

@@ -1662,6 +1662,15 @@ as it can cause framerate drops on animations in Android 9 and lower (see [Hybri
   ])
   String? iframeRole;
 
+  @SupportedPlatforms(platforms: [
+    WebPlatform(
+        requiresSameOrigin: false,
+        apiName: "iframe.ariaHidden",
+        apiUrl:
+        "https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-hidden")
+  ])
+  String? iframeAriaHidden;
+
   @ExchangeableObjectConstructor()
   InAppWebViewSettings_({
     this.useShouldOverrideUrlLoading,
@@ -1805,6 +1814,7 @@ as it can cause framerate drops on animations in Android 9 and lower (see [Hybri
     this.iframeName,
     this.iframeCsp,
     this.iframeRole,
+    this.iframeAriaHidden,
   }) {
     if (this.minimumFontSize == null)
       this.minimumFontSize = Util.isAndroid ? 8 : 0;

flutter_inappwebview_platform_interface/lib/src/in_app_webview/in_app_webview_settings.g.dart

@@ -231,6 +231,7 @@ class InAppWebViewWebElement implements Disposable {
       iframe.name = settings!.iframeName ?? iframe.name;
       iframe.csp = settings!.iframeCsp ?? iframe.csp;
       iframe.role = settings!.iframeRole ?? iframe.role;
+      iframe.ariaHidden = settings!.iframeAriaHidden ?? iframe.ariaHidden;
 
       if (settings!.iframeSandbox != null &&
           settings!.iframeSandbox != Sandbox.ALLOW_ALL) {
@@ -474,6 +475,9 @@ class InAppWebViewWebElement implements Disposable {
     if (settings!.iframeRole != newSettings.iframeRole) {
       iframe.role = newSettings.iframeRole;
     }
+    if (settings!.iframeAriaHidden != newSettings.iframeAriaHidden) {
+      iframe.ariaHidden = newSettings.iframeAriaHidden;
+    }
 
     if (settings!.iframeSandbox != newSettings.iframeSandbox) {
       var sandbox = newSettings.iframeSandbox;