[llvm] [AMDGPU] Move `AMDGPUAttributorPass` to full LTO post link stage (PR #102086)

[Yaxun Liu via llvm-commits]

yxsamliu wrote:

> A light breeze can cause blender to fail. Any random code perturbation will break it until the WWM spilling patches are committed

Agree. But for this PR I think it may actually caught a real issue

https://github.com/llvm/llvm-project/pull/102086