[clang] [llvm] [AArch64] Add a check for invalid default features (PR #104435)

[via cfe-commits]

llvmbot wrote:

<!--IGNORE-->
Failed to cherry-pick: 362142c4bb5cc657151f592e507f552d5b9f7dde

https://github.com/llvm/llvm-project/actions/runs/10450539158

Please manually backport the fix and push it to your github fork.  Once this is done, please create a [pull request](https://github.com/llvm/llvm-project/compare)

https://github.com/llvm/llvm-project/pull/104435