Fix FTheoryTools bug, extend strict_transform #18490

Job	Run time
doctest (1.10, Linux, RPTU, normal-memory)	26m 54s
doctest (1.11, Linux, RPTU, normal-memory)	27m 54s
doctest (nightly, Linux, RPTU, normal-memory)	31m 21s
doctest (1.10, Linux, RPTU, normal-memory, depwarn=error)	27m 16s
doctest (1.10, macOS, RPTU)	17m 45s
extra-long-test	0s
test (1.6, short, Linux)	20m 52s
test (1.6, long, Linux)	19m 25s
test (1.10, short, Linux)	22m 53s
test (1.10, long, Linux)	18m 23s
test (1.11, short, Linux)	19m 53s
test (1.11, long, Linux)	16m 5s
test (nightly, short, Linux)	2h 30m 17s
test (nightly, long, Linux)	17m 8s
test (1.10, short, Linux, RPTU, high-memory, depwarn=error)	23m 18s
test (1.10, long, Linux, RPTU, normal-memory, depwarn=error)	18m 45s
test (1.10, short, macOS, RPTU)	13m 39s
test (1.10, long, macOS, RPTU)	12m 14s
test (1.10, book, Linux, RPTU, normal-memory)	38m 47s
test (nightly, book, Linux, RPTU, normal-memory)	9m 55s
	8h 52m 44s

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