[llvm] [VPlan] Use VPInstructionWithType for uniform casts. (PR #140623)

[Dmitry Vasilyev via llvm-commits]

slydiman wrote:

Buildbots [llvm-nvptx64-nvidia-ubuntu](https://lab.llvm.org/buildbot/#/builders/160/builds/39040) and [llvm-nvptx-nvidia-ubuntu](https://lab.llvm.org/buildbot/#/builders/180/builds/39164) are broken.
```
FAILED: unittests/Transforms/Vectorize/VectorizeTests 
error: undefined reference to 'non-virtual thunk to llvm::VPWidenLoadRecipe::getAsRecipe()'
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.
```
Please fix ASAP or revert.

https://github.com/llvm/llvm-project/pull/140623