Allow accepting edit with Numpad Enter key in wxTreeCtrl too

This key should work in the same way as normal Enter key and accept the
changes.

Closes #18682.

src/common/treebase.cpp

@@ -357,6 +357,7 @@ void wxTreeCtrlBase::OnCharHook(wxKeyEvent& event)
                 wxFALLTHROUGH;
 
             case WXK_RETURN:
+            case WXK_NUMPAD_ENTER:
                 EndEditLabel(GetFocusedItem(), discardChanges);
 
                 // Do not call Skip() below.