Adapt to drop of StatusCode check via StatusCodeSvc
With gaudi/Gaudi!989 (merged) we are enforcing the check of returned StatusCode
instances only via the [[nodiscard]]
attribute and compiler warnings, so the constructor StatusCode::StatusCode(code, checked)
is deprecated.
This MR fixes all the warnings resulting from the new StatusCode
policy.
Note: made on top of !946 (merged) to avoid conflicts.