budget: mark Budget Transfer view not visible

The corresponding form, BudgetTransfer_viewBudgetTransferLine does not
exist, so mark view as not visible for now so that it's not tested.

bt5/erp5_budget/ActionTemplateItem/portal_types/Budget%20Transfer/view.xml

@@ -58,7 +58,7 @@
         </item>
         <item>
             <key> <string>visible</string> </key>
-            <value> <int>1</int> </value>
+            <value> <int>0</int> </value>
         </item>
       </dictionary>
     </pickle>