[clang] [Driver][LTO] Copy fix empty stats filename to AMDGPU, HIPAMD, MinGW (PR #74178)

[Fangrui Song via cfe-commits]

MaskRay wrote:

We should change `addLTSOption` and let it perform:
```
    auto Input = llvm::find_if(
        Inputs, [](const InputInfo &II) -> bool { return II.isFilename(); });
    if (Input == Inputs.end())
      // For a very rare case, all of the inputs to the linker are
      // InputArg. If that happens, just use the first InputInfo.
      Input = Inputs.begin();
```

https://github.com/llvm/llvm-project/pull/74178