[llvm] [VPlan] Use correct constructor when cloning VPWidenIntrinsicRecipe without underlying CallInst (PR #137493)

[Florian Hahn via llvm-commits]

https://github.com/fhahn approved this pull request.

We generally prefer leaving clone() implementations unimplemented for cases which are never cloned (such as used in EVL only), but in this cases there may be other places that  may want to create VPWidenIntrinsicRecipes w/o underlying instruction

LGTM

https://github.com/llvm/llvm-project/pull/137493