[llvm] [VPlan] Move predication to VPlanTransform (NFC). (PR #128420)

[via llvm-commits]

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@@ -9488,7 +9267,8 @@ LoopVectorizationPlanner::tryToBuildVPlanWithVPRecipes(VFRange &Range,
       // latter are added above for masking.
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ayalz wrote:

Follow-up: have this stage take care of widening original scalar recipes, including canonical IV, blend, and masking recipes (underlying-less VPInstructions)?

https://github.com/llvm/llvm-project/pull/128420