Fixed the indexed attributes

...api/src/main/java/at/tuwien/api/database/DatabaseDto.java

.../api/src/main/java/at/tuwien/api/database/LicenseDto.java

...ice/api/src/main/java/at/tuwien/api/database/ViewDto.java

.../src/main/java/at/tuwien/api/database/table/TableDto.java

.../java/at/tuwien/api/database/table/columns/ColumnDto.java

...tuwien/api/database/table/constraints/ConstraintsDto.java

...src/main/java/at/tuwien/api/identifier/IdentifierDto.java

...service/api/src/main/java/at/tuwien/api/user/UserDto.java

dbrepo-search-db/init/indices/database.json

dbrepo-search-service/app/api/routes.py

dbrepo-search-service/app/opensearch_client.py

dbrepo-ui/api/identifier.mapper.js

dbrepo-ui/components/search/AdvancedSearch.vue