RFR(S): 8238385: CTW: C2 (Shenandoah) compilation fails with "Range check dependent CastII node was not removed"

[Roland Westrelin]

> Looks good to me.
>
> Could you please drop the redundant "Shenandoah" from the test name? E.g.:
>   gc/shenandoah/compiler/FoldIfAfterExpansion.java

Thanks for the review. I'll fix the test name.

Roland.