fix: add back attribute values at /me endpoint

[netroms]

Summary

Reintroduces attributeValues at the /me endpoint. This value was removed from the response some time in 2.38.
Value is now deserialized in the payload as in any other BaseIndentifiableObejcts.

Automatic test

MyControllerTest#testGetCurrentUserAttributeValues()

Manual test

1. Create an attribute on the User object.
2. Set an attribute value on your (logged in user).
3. Check endpoint /me return a JSON with the attributeValues field, and that it contains the value you set in step 2.

[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 SonarCloud