fix(HomotopyContinuation): handle `NaN` results from `unpolynomialize… #348

Job	Run time
downgrade (1.10, core)	17s
downgrade (1.10, downstream)	17s
downgrade (1.10, wrappers)	18s
test (core, 1.10, ubuntu-latest)	17m 29s
test (core, 1.10, macos-latest)	26m 50s
test (core, 1.10, windows-latest)	27m 48s
test (core, 1, ubuntu-latest)	29m 46s
test (core, 1, macos-latest)	31m 48s
test (core, 1, windows-latest)	42m 24s
test (downstream, 1.10, ubuntu-latest)	11m 37s
test (downstream, 1.10, macos-latest)	9m 34s
test (downstream, 1.10, windows-latest)	15m 19s
test (downstream, 1, ubuntu-latest)	21m 18s
test (downstream, 1, macos-latest)	16m 41s
test (downstream, 1, windows-latest)	26m 58s
test (wrappers, 1.10, ubuntu-latest)	10m 14s
test (wrappers, 1.10, macos-latest)	7m 43s
test (wrappers, 1.10, windows-latest)	13m 4s
test (wrappers, 1, ubuntu-latest)	18m 21s
test (wrappers, 1, macos-latest)	18m 43s
test (wrappers, 1, windows-latest)	21m 31s
	6h 8m 0s

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