[llvm] [ARM] Add tan intrinsic lowering (PR #95439)

[Farzon Lotfi via llvm-commits]

farzonl wrote:

@aeubanks this PR should unblock you from the issue raised in https://github.com/llvm/llvm-project/pull/94559 as I figure out a more general approach for other backends.

https://github.com/llvm/llvm-project/pull/95439