[clang] [PAC][Driver] Add `-faarch64-jump-table-hardening` flag (PR #113149)

[Daniil Kovalev via cfe-commits]

kovdan01 wrote:

### Merge activity

* **Dec 5, 3:32 AM EST**: A user started a stack merge that includes this pull request via [Graphite](https://app.graphite.dev/github/pr/llvm/llvm-project/113149).


https://github.com/llvm/llvm-project/pull/113149