Invalid type for datetime fields of `LabelRowV2` instance after labels initialisation

[gfringeli]

After initialising labels of a LabelRowV2 instance using its initialise_labels method the fields created_at and last_edited_at are of type str instead of datetime.
Looks there is a missing conversion to datetime of the str timestamps in _parse_label_row_dict

encord-client-python/encord/objects/ontology_labels_impl.py

Line 1410 in dd83dce

created_at=label_row_dict["created_at"],

PS: It also seems like the str timestamp used in the code location above does not contain subsecond information, i.e. no millisecond data. However, when obtaining an already initialised label from Encord, the datetime fields do contain millisecond data.