feat: allow custom grand total position #1267

Job	Run time
Collect changes / collect-changes	9s
Python tests / types-check	35s
Python tests / lint-and-format-check	21s
Python tests / unit-tests (py310)	3m 12s
Python tests / unit-tests (py312)	2m 35s
Python tests / unit-tests (py314)	2m 30s
Python tests / unit-tests (py313)	2m 16s
Python tests / unit-tests (py311)	3m 16s
status-check	4s
	14m 58s

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