Removing explicit field chunking #635

Job	Run time
mypy	3m 43s
py3.13 \| macos \| integration tests	12m 26s
py3.13 \| macos \| unit tests	8m 7s
py3.13 \| ubuntu \| integration tests	14m 26s
py3.13 \| ubuntu \| unit tests	9m 10s
py3.13 \| windows \| integration tests	22m 3s
py3.13 \| windows \| unit tests	16m 4s
py3.10 \| ubuntu \| integration tests	14m 30s
py3.10 \| ubuntu \| unit tests	10m 14s
py3.11 \| ubuntu \| unit tests	10m 7s
py3.12 \| ubuntu \| unit tests	9m 41s
merge-test-artifacts	2s
	2h 10m 33s

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