erp5_catalog: Use getpath function as monkeypatch to getPath

The commit 7e84b4e8 did break the instance, this can be considered
as the revert.

product/ZSQLCatalog/ZSQLCatalog.py

@@ -131,7 +131,7 @@ class ZCatalog(Folder, Persistent, Implicit):
 
     ('Search ZCatalog',
      ['searchResults', '__call__', 'uniqueValuesFor',
-      'getpath', 'schema', 'names', 'indexes',
+      'schema', 'names', 'indexes',
       'all_meta_types', 'valid_roles', 'resolve_url',
       'getobject', 'getObject', 'getObjectList', 'getCatalogSearchTableIds',
       'getCatalogSearchResultKeys', 'getFilterableMethodList', ],
@@ -942,7 +942,7 @@ class ZCatalog(Folder, Persistent, Implicit):
 # Next line commented for now as we don't want this getpath function to be used
 # whenever a call is being made to any catalog object, instead we prefer using
 # the getPath from the base.
-#  getPath = getpath
+  getPath = getpath
 
   security.declarePrivate('hasPath')
   def hasPath(self, path, sql_catalog_id=None):