fix(HomotopyContinuation): handle `NaN` results from `unpolynomialize… #213

Job	Run time
downgrade (1.10, core)	11m 54s
downgrade (1.10, adjoint)	8m 57s
downgrade (1.10, alloc_check)	5m 55s
test (1.10, ubuntu-latest, core)	12m 9s
test (1.10, ubuntu-latest, adjoint)	9m 25s
test (1.10, ubuntu-latest, alloc_check)	5m 51s
test (1.10, macos-latest, core)	9m 15s
test (1.10, macos-latest, adjoint)	7m 12s
test (1.10, macos-latest, alloc_check)	4m 15s
test (1.10, windows-latest, core)	13m 44s
test (1.10, windows-latest, adjoint)	11m 20s
test (1.10, windows-latest, alloc_check)	7m 8s
test (1, ubuntu-latest, core)	19m 35s
test (1, ubuntu-latest, adjoint)	15m 37s
test (1, ubuntu-latest, alloc_check)	10m 49s
test (1, macos-latest, core)	9m 8s
test (1, macos-latest, adjoint)	13m 20s
test (1, macos-latest, alloc_check)	7m 54s
test (1, windows-latest, core)	19m 7s
test (1, windows-latest, adjoint)	18m 58s
test (1, windows-latest, alloc_check)	13m 20s
	3h 54m 53s

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