feat: add new fields regarding NULL values #1305

Job	Run time
Collect changes / collect-changes	10s
Python tests / types-check	33s
Python tests / lint-and-format-check	24s
Python tests / unit-tests (py310)	3m 4s
Python tests / unit-tests (py311)	3m 5s
Python tests / unit-tests (py313)	2m 49s
Python tests / unit-tests (py312)	2m 58s
Python tests / unit-tests (py314)	2m 55s
status-check	4s
	16m 2s

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