Fix Elasticsearch/Opensearch unit test errors

2022-12-13 11:42:44,401 [http-nio-40629-exec-2] ERROR [WebEngineExceptionMapper] org.nuxeo.ecm.core.api.NuxeoException: OpenSearchStatusException[OpenSearch exception [type=search_phase_execution_exception, reason=all shards failed]]; nested: OpenSearchException[OpenSearch exception [type=illegal_argument_exception, reason=Text fields are not optimised for operations that require per-document field data like aggregations and sorting, so these operations are disabled by default. Please use a keyword field instead. Alternatively, set fielddata=true on [dc:title] in order to load field data by uninverting the inverted index. Note that this can use significant memory.]]; nested: OpenSearchException[OpenSearch exception [type=illegal_argument_exception, reason=Text fields are not optimised for operations that require per-document field data like aggregations and sorting, so these operations are disabled by default. Please use a keyword field instead. Alternatively, set fielddata=true on [dc:title] in order to load field data by uninverting the inverted index. Note that this can use significant memory.]];
org.nuxeo.ecm.core.api.NuxeoException: OpenSearchStatusException[OpenSearch exception [type=search_phase_execution_exception, reason=all shards failed]]; nested: OpenSearchException[OpenSearch exception [type=illegal_argument_exception, reason=Text fields are not optimised for operations that require per-document field data like aggregations and sorting, so these operations are disabled by default. Please use a keyword field instead. Alternatively, set fielddata=true on [dc:title] in order to load field data by uninverting the inverted index. Note that this can use significant memory.]]; nested: OpenSearchException[OpenSearch exception [type=illegal_argument_exception, reason=Text fields are not optimised for operations that require per-document field data like aggregations and sorting, so these operations are disabled by default. Please use a keyword field instead. Alternatively, set fielddata=true on [dc:title] in order to load field data by uninverting the inverted index. Note that this can use significant memory.]];