[clang-tools-extra] [clangd] Enable parsing of forwarding functions in the preamble by default (PR #127359)

[Haojian Wu via cfe-commits]

https://github.com/hokein commented:

The change looks good. We should be mindful of the potential performance regression due to this (1% increase in preamble size, as noted https://reviews.llvm.org/D124688#3483895).  

I’ll leave the final approval to @kadircet.  


https://github.com/llvm/llvm-project/pull/127359