[clang] [Clang] skip default argument instantiation for non-defining friend declarations without specialization info to meet [dcl.fct.default] p4 (PR #113777)

[Matheus Izvekov via cfe-commits]

mizvekov wrote:

@zyn0217 meant the PR description, which is the body of the commit, not the title.
I already fixed it for you.

https://github.com/llvm/llvm-project/pull/113777