Also ignore runOffThreadScript when running differential testing, e.g. for nestTest mismatch within-process and compareJIT across-process testing.
Also ignore runOffThreadScript when running differential testing, e.g. for nestTest mismatch within-process and compareJIT across-process testing.

nth10sd/funfuzz,nth10sd/funfuzz,MozillaSecurity/funfuzz,MozillaSecurity/funfuzz,nth10sd/funfuzz,MozillaSecurity/funfuzz