feat+fix: Add option to set default download/share file type, fix typo in filter to query string, disable unused options in document filter

packages/paperless_api/lib/src/models/query_parameters/id_query_parameter.dart

@@ -26,10 +26,7 @@ class IdQueryParameter with _$IdQueryParameter {
         '${field}__isnull': '0',
       },
       fromId: (id) {
-        if (id == null) {
-          return {};
-        }
-        return {'${field}_id': '$id'};
+        return {'${field}__id': '$id'};
       },
     );
   }