LieAlgebras: more optimizations regarding type stability #16662

Job	Run time
test (1.6, short, ubuntu-latest)	1h 29m 44s
test (1.6, long, ubuntu-latest)	57m 25s
test (1.10, short, ubuntu-latest)	1h 10m 53s
test (1.10, long, ubuntu-latest)	46m 45s
doctest (1.10, ubuntu-latest)	25m 40s
test (1.11-nightly, short, ubuntu-latest)	1h 24m 30s
test (1.11-nightly, long, ubuntu-latest)	55m 41s
doctest (1.11-nightly, ubuntu-latest)	25m 59s
test (nightly, short, ubuntu-latest)	1h 24m 2s
doctest (nightly, ubuntu-latest)	28m 16s
test (nightly, long, ubuntu-latest)	51m 18s
doctest (1.10, ubuntu-latest, depwarn=error)	24m 57s
test (1.10, short, ubuntu-latest, depwarn=error)	1h 9m 13s
doctest (1.10, macOS, RPTU)	12m 18s
test (1.10, long, ubuntu-latest, depwarn=error)	46m 37s
test (1.10, short, macOS, RPTU)	13m 44s
test (1.10, long, macOS, RPTU)	14m 7s
test (1.10, book, ubuntu-latest)	48m 35s
	14h 9m 44s

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