ZODB Components: Fix migration dialog with >preferred_listbox_list_mode_line_count modules.

Only the current ListBox page was submitted because this simply doesn't work
with temp_objects. Instead, display all of the modules to be migrated on a
single page.

product/ERP5/bootstrap/erp5_core/SkinTemplateItem/portal_skins/erp5_core/BusinessTemplate_viewMigrateSourceCodeFromFilesystemDialog/listbox.xml

@@ -288,9 +288,7 @@
                 </item>
                 <item>
                     <key> <string>lines</string> </key>
-                    <value>
-                      <persistent> <string encoding="base64">AAAAAAAAAAM=</string> </persistent>
-                    </value>
+                    <value> <string></string> </value>
                 </item>
                 <item>
                     <key> <string>list_action</string> </key>
@@ -625,19 +623,6 @@
     </pickle>
   </record>
   <record id="3" aka="AAAAAAAAAAM=">
-    <pickle>
-      <global name="TALESMethod" module="Products.Formulator.TALESField"/>
-    </pickle>
-    <pickle>
-      <dictionary>
-        <item>
-            <key> <string>_text</string> </key>
-            <value> <string>python: preferences.getPreference(\'preferred_listbox_list_mode_line_count\', 30)</string> </value>
-        </item>
-      </dictionary>
-    </pickle>
-  </record>
-  <record id="4" aka="AAAAAAAAAAQ=">
     <pickle>
       <global name="Method" module="Products.Formulator.MethodField"/>
     </pickle>