fix(DHIS2-19863): expose code field in ApiToken

[kabaros]

implements https://dhis2.atlassian.net/browse/DHIS2-19863

When exposing the code field for ApiToken in the UI, we realised that it is ignored by the API. This is because generatePersonalAccessToken creates a new instance of ApiToken that uses the builder, and omits the BaseIdentifiable params.

We've looked at making the method more generic so that it supports other base fields (like name for example), but then realised that only code is part of the ApiToken schema, so opted for just adding that one field to the builder.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud