Removing explicit field chunking #640

Job	Run time
mypy	3m 35s
py3.13 \| macos \| integration tests	13m 16s
py3.13 \| macos \| unit tests	7m 29s
py3.13 \| ubuntu \| integration tests	13m 44s
py3.13 \| ubuntu \| unit tests	9m 33s
py3.13 \| windows \| integration tests	25m 0s
py3.13 \| windows \| unit tests	11m 45s
py3.10 \| ubuntu \| integration tests	15m 8s
py3.10 \| ubuntu \| unit tests	10m 6s
py3.11 \| ubuntu \| unit tests	9m 55s
py3.12 \| ubuntu \| unit tests	9m 47s
merge-test-artifacts	2s
	2h 9m 20s

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