[llvm] [VPlan] Expand AddRecs in Plan's entry (PR #209921)

[Luke Lau via llvm-commits]

lukel97 wrote:

> Failed to get test-suite diff from [86779ac...39bcbc9](https://github.com/llvm/llvm-project/compare/86779ac9575ca95b99ee7aadec7d2e5341e6dab4...39bcbc98b7f30ef5729e3d8f99909c9803ddd59b): https://github.com/llvm/llvm-project/actions/runs/33098890381

The crash isn't coming from this PR, it's from an unrelated change to the RISC-V backend, should be fixed by #219318 

https://github.com/llvm/llvm-project/pull/209921