TCOMP-2119 fix was not complete (not unwrap nullable in all case)
Bug was discovered on connectors-se/stream-json Unit Test; with usage of Array of Array.
Fault code is covered by compopnent-runtime unit test (so, also the fix), but not with the use case that reveals the bug.
Code fix is enough for making connectors-se/stream-json Unit Test working.
(A future work item will be to add a unit test to cover this case)