[llvm] [TTI] Don't drop VP intrinsic args when delegating to non-vp equivalent (PR #147677)

[Alex Bradbury via llvm-commits]

asb wrote:

This is causing a compiler crash when building the llvm-test-suite in the rva23-evl configuration https://lab.llvm.org/staging/#/builders/210/builds/988

https://github.com/llvm/llvm-project/pull/147677