[clang] [llvm] [HLSL] Run finalize linkage pass for all targets (PR #134260)

[Steven Perron via cfe-commits]

s-perron wrote:

> The idea that a symbol should be externally visible before linking, and not externally visible afterwards, isn't new: many platforms have some form of symbol visibility. I'm not sure why you don't want to express that in LLVM IR... having an implicit HLSL-specific rule like this just makes it harder to understand what's happening.

That is something for @llvm-beanz to answer. I'm just working with what was already designed.

https://github.com/llvm/llvm-project/pull/134260