JBR-8408 Post accessibility value changed events for scroll bars

3rd party apps might want to subscribe for scroll bar value changed events to track scroll position. VoiceOver and Zoom don't react on these events.

Author: dmitrii-drobotov

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

@@ -405,7 +405,8 @@ public void propertyChange(PropertyChangeEvent e) {
                     AccessibleRole thisRole = accessible.getAccessibleContext()
                                                         .getAccessibleRole();
                     if (thisRole == AccessibleRole.SLIDER ||
-                            thisRole == AccessibleRole.PROGRESS_BAR) {
+                            thisRole == AccessibleRole.PROGRESS_BAR ||
+                            thisRole == AccessibleRole.SCROLL_BAR) {
                         execute(ptr -> valueChanged(ptr));
                     }
                 }