chore(descheming): remove remaining internal usage of deprecated schema #20356

Job	Run time
Test ubuntu-latest python-3.9	4m 30s
Test ubuntu-latest python-3.10	5m 4s
Test ubuntu-latest python-3.11	6m 33s
Test ubuntu-latest python-3.12	6m 7s
Doctests	0s
Test shapely and duckdb import	26s
Test windows-latest python-3.9	8m 55s
Test windows-latest python-3.10	11m 45s
Test windows-latest python-3.11	9m 56s
Test windows-latest python-3.12	9m 50s
	1h 3m 6s

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