It may happen that firstname and lastname of current user is not defined. We must show username instead of "firstname + lastname" in UI.
- when firstname and lastname of the current user are empty, show username instead
- In the branch ope-1102-username backend will return such object for standard demo user:
E2E test fails.
- This feature is important for LDAP case as we're not sure that customers will correctly configure LDAP fields for firstname and lastname