[clang-tools-extra] [clangd] Let DefineOutline tweak handle member function templates (PR #112345)

[Nathan Ridge via cfe-commits]

HighCommander4 wrote:

It looks like it was a deliberate design choice to disable this tweak for templates: https://reviews.llvm.org/D85310.

cc @kadircet, @hokein for any thoughts

https://github.com/llvm/llvm-project/pull/112345