[llvm] [SLP]Remove operands upon marking instruction for deletion. (PR #97409)

[Alexey Bataev via llvm-commits]

alexey-bataev wrote:

> See [repro.tar.gz](https://github.com/user-attachments/files/16149916/repro.tar.gz)
> 
> I'll see if I can get a reduced repro.

Ok, able to reproduce, will try to investigate

https://github.com/llvm/llvm-project/pull/97409