Related: tdf#82998 assume VALUE_CHANGED makes sense only for windows

jdiggs: I believe [VALUE_CHANGED] is expected for Windows' accessibility APIs.
However for ATK/AT-SPI2, value-change events are expected only for the sorts of
things which implement AtkValue (scrollbars, progressbars, sliders,
spinbuttons, etc.) Combo boxes, lists, and the like should not be emitting this
event.

Change-Id: I9dcab7fb4004a24f88915f904eb508dfee2d4ae5

accessibility/source/standard/vclxaccessiblebox.cxx

@@ -124,10 +124,12 @@ void VCLXAccessibleBox::ProcessWindowEvent (const VclWindowEvent& rVclWindowEven
             if ( pList != NULL )
             {
                 pList->ProcessWindowEvent (rVclWindowEvent, m_bIsDropDownBox);
+#if defined WNT
                 if (m_bIsDropDownBox)
                 {
                     NotifyAccessibleEvent(AccessibleEventId::VALUE_CHANGED, Any(), Any());
                 }
+#endif
             }
             break;
         }
@@ -179,8 +181,10 @@ void VCLXAccessibleBox::ProcessWindowEvent (const VclWindowEvent& rVclWindowEven
                     if ( sText.isEmpty() )
                         sText = xText->getText();
                     pList->UpdateSelection_Acc(sText, m_bIsDropDownBox);
+#if defined WNT
                     if (m_bIsDropDownBox || ( !m_bIsDropDownBox && m_aBoxType==COMBOBOX))
                         NotifyAccessibleEvent(AccessibleEventId::VALUE_CHANGED, Any(), Any());
+#endif
                 }
             }
             break;
@@ -545,7 +549,7 @@ void VCLXAccessibleBox::FillAccessibleStateSet( utl::AccessibleStateSetHelper& r
         ListBox* pListBox = static_cast< ListBox* >( GetWindow() );
         if (pListBox != NULL && pListBox->GetEntryCount() > 0)
         {
-                nSelectedEntryCount = pListBox->GetSelectEntryCount();
+            nSelectedEntryCount = pListBox->GetSelectEntryCount();
             if ( nSelectedEntryCount == 0)
                 rStateSet.AddState(AccessibleStateType::INDETERMINATE);
         }