8309733: [macOS, Accessibility] VoiceOver: Incorrect announcements of JRadioButton

Backport-of: d1d2b55ce0b950e07f6e3761983f73fd58079627

Author: GoeLin

src/java.desktop/macosx/classes/sun/lwawt/macosx/CAccessible.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 2023, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -182,17 +182,23 @@ public void propertyChange(PropertyChangeEvent e) {
 
                     // Do send check box state changes to native side
                     if (thisRole == AccessibleRole.CHECK_BOX) {
-                        valueChanged(ptr);
+                        if (newValue != null && !newValue.equals(oldValue)) {
+                            valueChanged(ptr);
+                        }
                     }
 
                     // Do send radio button state changes to native side
                     if (thisRole == AccessibleRole.RADIO_BUTTON) {
-                        valueChanged(ptr);
+                        if (newValue != null && !newValue.equals(oldValue)) {
+                            valueChanged(ptr);
+                        }
                     }
 
                     // Do send toggle button state changes to native side
                     if (thisRole == AccessibleRole.TOGGLE_BUTTON) {
-                        valueChanged(ptr);
+                        if (newValue != null && !newValue.equals(oldValue)) {
+                            valueChanged(ptr);
+                        }
                     }
                 } else if (name.equals(ACCESSIBLE_NAME_PROPERTY)) {
                     //for now trigger only for JTabbedPane.