fix: don't try to update OAPs of deleted values (DEV-2832)

[jnussbaum]

No description provided.

[linear]

DEV-2832 don't try to update OAPs of deleted value

When updating the OAPs of a resource, all its values must also be updated. For some values, I get the following error in the function _update_permissions_for_value():

2023-10-16 11:13:44,984 oap_get_set.py            ERROR    {'message': 'Error while updating permissions of resource '
            'http://rdfh.ch/0102/Wfa8DFmvTKyOvo86YAdT4w, value '
            'http://rdfh.ch/0102/Wfa8DFmvTKyOvo86YAdT4w/values/1J5losuoTQensgvs6wuVFw',
 'payload': {'context': {'knora-api': 'http://api.knora.org/ontology/knora-api/v2#',
                          'rdf': 'http://www.w3.org/1999/02/22-rdf-syntax-ns#',
                          'rdfs': 'http://www.w3.org/2000/01/rdf-schema#',
                          'scenario-tanner': 'http://api.stage.dasch.swiss/ontology/0102/scenario-tanner/v2#',
                          'xsd': 'http://www.w3.org/2001/XMLSchema#'},
             'id': 'http://rdfh.ch/0102/Wfa8DFmvTKyOvo86YAdT4w',
             'type': 'scenario-tanner:Correspondence',
             'knora-api:DeletedValue': {'id': 'http://rdfh.ch/0102/Wfa8DFmvTKyOvo86YAdT4w/values/1J5losuoTQensgvs6wuVFw',
                                        'type': 'knora-api:DeletedValue',
                                        'knora-api:hasPermissions': 'CR '
                                                                    'http://www.knora.org/ontology/knora-admin#ProjectAdmin|D '
                                                                    'http://www.knora.org/ontology/knora-admin#Creator|V '
                                                                    'http://www.knora.org/ontology/knora-admin#ProjectMember|RV '
                                                                    'http://www.knora.org/ontology/knora-admin#KnownUser,http://www.knora.org/ontology/knora-admin#UnknownUser'}},
 'response_text': '{"knora-api:error":"dsp.errors.NotFoundException: Some '
                  'requested entities were not found: '
                  'http://www.knora.org/ontology/knora-base#DeletedValue","context":{"knora-api":"http://api.knora.org/ontology/knora-api/v2#"}}',
 'status_code': 404}

Apparently, deleted values are retrieved, but an attempt to modify them results in this error.

Solution: skip the deleted values.