[clang-tools-extra] [llvm] [Support] Move raw_ostream::tie to raw_fd_ostream (PR #97396)

[Fangrui Song via cfe-commits]

MaskRay wrote:

Unneeded `tie` for non-fd streams do cause performance issues. I recall that `flush_tied_then_write` contributed noticeable overhead in MC: https://reviews.llvm.org/D145791#4185609 

https://github.com/llvm/llvm-project/pull/97396