lokdocview: Add missing callback cases

To prevent gtktiledviewer from crashing.

Change-Id: Ia23504c20eac185f3302e8d694672ebf6d853585
Reviewed-on: https://gerrit.libreoffice.org/78737
Tested-by: Jenkins
Reviewed-by: Aron Budea <aron.budea@collabora.com>

libreofficekit/source/gtk/lokdocview.cxx

@@ -1359,6 +1359,9 @@ callback (gpointer pData)
         break;
     case LOK_CALLBACK_CLIPBOARD_CHANGED:
     case LOK_CALLBACK_CONTEXT_CHANGED:
+    case LOK_CALLBACK_CELL_SELECTION_AREA:
+    case LOK_CALLBACK_CELL_AUTO_FILL_AREA:
+    case LOK_CALLBACK_TABLE_SELECTED:
         break; // TODO
     default:
         g_assert(false);