* add: IsServiceAccount to SignedInUser and IsRealUser * fix: linting error * refactor: add function IsServiceAccountUser() By adding the function IsServiceAccountUser() we use it to identify for ServiceAccounts in the HasUniqueID() since caching is built up on having a uniqueID, see comment: https://github.com/grafana/grafana/pull/58015#discussion_r1011361880