Test

fix transform points with duplicate indices #2325

Job	Run time
test (windows-latest, 3.11, 2025.12.0, min dask)	5m 51s
test (ubuntu-latest, 3.11, latest)	4m 25s
test (windows-latest, 3.14, latest)	3m 48s
test (ubuntu-latest, 3.14, latest)	2m 43s
test (macos-latest, 3.14, allow, prerelease)	2m 13s
test (macos-latest, 3.11, latest)	3m 11s
	22m 11s

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