[clang-tools-extra] [clangd] Avoid libFormat's objective-c guessing heuristic where possible (PR #84133)

[Nathan Ridge via cfe-commits]

HighCommander4 wrote:

For additional context, please refer to the discussion of https://github.com/llvm/llvm-project/pull/78925, which was my first attempt to fix these bugs using a different approach

https://github.com/llvm/llvm-project/pull/84133