Set ViewIdResourceName for Appium based tests (#15436)

Xamarin.Forms.Platform.Android/AccessibilityDelegateAutomationId.cs

@@ -34,10 +34,19 @@ namespace Xamarin.Forms.Platform.Android
 				{
 					host.ContentDescription = value;
 				}
-				else if (host.ContentDescription == (_element as VisualElement)?.AutomationId)
+				else if (host.ContentDescription == (_element as Element)?.AutomationId)
 				{
 					host.ContentDescription = null;
 				}
+
+				if (_element is Element element &&
+					!string.IsNullOrWhiteSpace(element.AutomationId) &&
+					host?.Context != null)
+				{
+					// This is used by Appium and other automation testing frameworks
+					// to locate views
+					info.ViewIdResourceName = $"{host.Context.PackageName}:id/{element.AutomationId}";
+				}
 			}
 		}