erp5_invoicing: don't index reference in fulltext which is usually generated...

erp5_invoicing: don't index reference in fulltext which is usually generated by system and meaningless

it's like 5.1, 2.4

bt5/erp5_invoicing/PortalTypeTemplateItem/portal_types/Invoice%20Cell.xml

@@ -49,7 +49,19 @@
         </item>
         <item>
             <key> <string>permission</string> </key>
-            <value> <string></string> </value>
+            <value>
+              <none/>
+            </value>
+        </item>
+        <item>
+            <key> <string>searchable_text_property_id</string> </key>
+            <value>
+              <tuple>
+                <string>title</string>
+                <string>description</string>
+                <string>short_title</string>
+              </tuple>
+            </value>
         </item>
         <item>
             <key> <string>title</string> </key>
@@ -59,6 +71,12 @@
             <key> <string>type_class</string> </key>
             <value> <string>InvoiceCell</string> </value>
         </item>
+        <item>
+            <key> <string>type_interface</string> </key>
+            <value>
+              <tuple/>
+            </value>
+        </item>
       </dictionary>
     </pickle>
   </record>