erp5_trade: fix method `Movement_zGetPackedQuantity`

The ZSQLMethod was using a wrong table `movement` instead of the `stock` table,
hence throwing errors. This commit makes it use the right table, by adding a
filter on `node_uid`, taking into account the structure of the new table.

/reviewed-by @jerome
/reviewed-on !2030

bt5/erp5_trade/SkinTemplateItem/portal_skins/erp5_trade/Movement_getPackedQuantity.py

 movement = context
 delivery_uid = movement.getExplanationUid()
+destination_uid = movement.getDestinationUid()
 resource_uid = movement.getResourceUid()
 variation_text = movement.getVariationText()
 packed_quantity = 0
 
 sql_list = movement.Movement_zGetPackedQuantity(
+                       node_uid=destination_uid,
                        explanation_uid=delivery_uid,
                        resource_uid=resource_uid,
                        variation_text=variation_text)

bt5/erp5_trade/SkinTemplateItem/portal_skins/erp5_trade/Movement_zGetPackedQuantity.sql

 SELECT
-	SUM(movement.quantity) AS quantity
+	SUM(stock.quantity) AS quantity
 FROM
-	catalog AS container_cell, movement
+	catalog AS container_cell, stock
 WHERE
-	movement.explanation_uid = <dtml-sqlvar explanation_uid type="int">
+	stock.explanation_uid = <dtml-sqlvar explanation_uid type="int">
   AND container_cell.has_cell_content = 0
-  AND container_cell.uid = movement.uid
+  AND container_cell.uid = stock.uid
   AND	(container_cell.portal_type = "Container Cell" 
       OR container_cell.portal_type = "Container Line")
 
 <dtml-if resource_uid>
-  AND movement.resource_uid = <dtml-sqlvar resource_uid type="int">
+  AND stock.resource_uid = <dtml-sqlvar resource_uid type="int">
+</dtml-if>
+<dtml-if node_uid>
+  AND stock.node_uid = <dtml-sqlvar node_uid type="int">
 </dtml-if>
 <dtml-if variation_text>
-  AND movement.variation_text = <dtml-sqlvar variation_text type="string">
+  AND stock.variation_text = <dtml-sqlvar variation_text type="string">
 </dtml-if>

bt5/erp5_trade/SkinTemplateItem/portal_skins/erp5_trade/Movement_zGetPackedQuantity.xml

@@ -27,6 +27,7 @@
         <item>
             <key> <string>arguments_src</string> </key>
             <value> <string>explanation_uid\n
+node_uid\n
 resource_uid\n
 variation_text</string> </value>
         </item>