fix for #231 #266

Job	Run time
run-tests (matrix, base, ubuntu-latest, 3.9, false)	1m 52s
run-tests (matrix, base, ubuntu-latest, 3.10, false)	1m 55s
run-tests (matrix, base, ubuntu-latest, 3.11, false)	2m 12s
run-tests (tensor, base, ubuntu-latest, 3.9, false)	8m 25s
run-tests (tensor, base, ubuntu-latest, 3.10, false)	7m 59s
run-tests (tensor, base, ubuntu-latest, 3.11, false)	8m 4s
run-tests (macos-latest, matrix, base, 3.11, true)	1m 11s
run-tests (macos-latest, tensor, base, 3.11, false)	4m 12s
run-tests (windows-latest, matrix, base, 3.11, false)	3m 45s
run-tests (windows-latest, tensor, base, 3.11, false)	16m 47s
run-tests (torch, tensor, ubuntu-latest, 3.11, false)	9m 34s
run-tests (jax, tensor, ubuntu-latest, 3.11, false)	9m 35s
run-tests (tensorflow, tensor, ubuntu-latest, 3.11, false)	9m 41s
run-tests (slepc, matrix, ubuntu-latest, 3.11, false)	2m 1s
	1h 27m 13s

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