weko#57009 fix bulk output issue

Author: wei-kuochen

modules/weko-items-ui/weko_items_ui/utils.py

@@ -4735,8 +4735,13 @@ def get_subs_item(self,
                             key_label.append(new_label.format('0'))
                             key_data.append('')
                     elif properties[key]['type'] in ['array', 'object']:
-                        if data and idx < len(data) and data[idx].get(key):
-                            m_data = data[idx][key]
+                        if data and idx < len(data):
+                            if isinstance(data, list) and data[idx].get(key):
+                                m_data = data[idx][key]
+                            elif isinstance(data, dict) and data.get(key):
+                                m_data = data[key]
+                            else:
+                                m_data = None
                         else:
                             m_data = None