feat(sdk): Remove includeUndefinedDates flag from DateFilter models #1277

Job	Run time
Collect changes / collect-changes	8s
Python tests / unit-tests (py313)	1m 14s
Python tests / unit-tests (py312)	1m 2s
Python tests / lint-and-format-check	19s
Python tests / unit-tests (py314)	1m 1s
Python tests / unit-tests (py310)	1m 7s
Python tests / unit-tests (py311)	1m 5s
Python tests / types-check	36s
status-check	4s
	6m 36s

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