[llvm-branch-commits] [clang] [clang][FMV][AArch64] Improve streaming mode compatibility (PR #101007)

[Alexandros Lamprineas via llvm-branch-commits]

labrinea wrote:

backport of [f8ae128](https://github.com/llvm/llvm-project/commit/f8ae128755777424cf4133e4e8e819c0bc08d2b1) on [llvm:release/19.x](https://github.com/llvm/llvm-project/tree/release/19.x).

https://github.com/llvm/llvm-project/pull/101007