sp_fr: add alias with _1 suffix to cater for nodes with maxOccurs > 1 (#33256)

Text nodes which can be multiple must always have a counter suffix.

passerelle/apps/sp_fr/models.py

@@ -490,6 +490,9 @@ class Resource(BaseResource):
                             yield p, value
                 else:
                     yield path, text_content(node)
+                    # case of multiple nodes
+                    new_path = path[:-1] + [path[-1] + '_1']
+                    yield new_path, text_content(node)
             return {'_'.join(path): value for path, value in helper([tag_name(root)], root)}
 
     class Meta: