Fix 2d output arrays with format tag #2145

Job	Run time
cwltool release test	12m 29s
CWL conformance (v1.0, docker)	6m 25s
No leftovers	2m 59s
CWL conformance (v1.0, singularity)	6m 54s
Tox (3, 8, lint)	30s
Linters (lintreadme)	48s
CWL conformance (v1.0, podman)	7m 10s
Tox (3, 8, unit)	5m 21s
Linters (shellcheck)	17s
CWL conformance (v1.1, docker)	7m 25s
Tox (3, 8, bandit)	30s
Linters (pydocstyle)	18s
CWL conformance (v1.1, singularity)	8m 8s
Tox (3, 8, mypy)	6m 10s
CWL conformance (v1.1, podman)	7m 58s
Tox (3, 9, lint)	27s
CWL conformance (v1.2, docker)	8m 55s
Tox (3, 9, unit)	4m 57s
build_test_container	9m 29s
CWL conformance (v1.2, singularity)	9m 23s
Tox (3, 9, bandit)	23s
CWL conformance (v1.2, podman)	9m 24s
Tox (3, 9, mypy)	6m 28s
CWL conformance (v1.2, docker, --fast-parser)	8m 54s
Tox (3, 10, lint)	29s
Test on macos-latest	3m 18s
Tox (3, 10, unit)	5m 6s
Tox (3, 10, bandit)	32s
Tox (3, 10, mypy)	6m 45s
Tox (3, 11, lint)	25s
Tox (3, 11, unit)	5m 5s
Tox (3, 11, bandit)	27s
Tox (3, 11, mypy)	5m 55s
Tox (3, 12, lint)	26s
Tox (3, 12, unit)	6m 16s
Tox (3, 12, bandit)	40s
Tox (3, 12, mypy)	7m 5s
	2h 54m 11s

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