Consistent naming in `get_params_mapping` #3686

Job	Run time
ubuntu-latest, ephemeris_connection	2m 59s
ubuntu-latest, black	17s
ubuntu-latest, py312-test-cov	1h 34m 52s
ubuntu-latest, notebooks	5m 45s
macos-latest, py312-test	55m 27s
ubuntu-latest, oldestdeps	34m 14s
	3h 13m 34s

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