[llvm] [ARM] Always lower direct calls as direct when the outliner is enabled (PR #66434)

[Amara Emerson via llvm-commits]

aemerson wrote:

This change looks reasonable to me, but since ARM have a wide corpus of armv7 size sensitive code, could your team evaluate the impact of this change @davemgreen?

https://github.com/llvm/llvm-project/pull/66434