research_item: fix missing selection name

bt5/erp5_research_item/SkinTemplateItem/portal_skins/erp5_research_item/ResearchItemModule_viewResearchSummaryReportData/listbox.xml

@@ -546,7 +546,7 @@
                 </item>
                 <item>
                     <key> <string>selection_name</string> </key>
-                    <value> <string></string> </value>
+                    <value> <string>research_item_module_view_research_summary_report_data_selection</string> </value>
                 </item>
                 <item>
                     <key> <string>sort</string> </key>