Add `is_in_canonical_form_for_deformation` #205

Job	Run time
oscartest (1.8, x64, ubuntu-latest)	15m 3s
oscartest (1.10, x64, ubuntu-latest)	13m 50s
oscartest (1.11, x64, ubuntu-latest)	30m 3s
oscartest (nightly, x64, ubuntu-latest)	30m 10s
	1h 29m 6s

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