Uniformize names of Splines tests (#1051) #13

Job	Run time
id_repo	3s
lint	44s
docker-build (latest, cpu)	2m 37s
docker-build (latest, hip)	5m 48s
docker-build (oldest, cpu)	1m 37s
docker-build (oldest, hip)	5m 17s
docker-build (oldest, cuda)	3m 48s
docker-build (latest, cuda)	4m 53s
coverage-test (latest, cpu, gcc, g++, 17, None)	21m 42s
test-with-sanitizer	-1s
clang-tidy-test	-1s
test	-1s
	46m 26s

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