[MetaSchedule] Handle deserializing empty string RVs in trace #12481
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It seems sometimes we can have random variables with names such as "" (this is not the empty string, but two quotation marks).
I believe this is suppose to hit "Case 2" in
TranslateInputRVsand become an empty string but this does not seem to be the case.Unsure if having an RV as "" may be problematic, if it is, this will certainly hide another bug
cc @junrushao1994