[clang-tools-extra] [clangd] Change completion-style default to detailed (PR #195963)

[Nathan Ridge via cfe-commits]

HighCommander4 wrote:

Oh, and maybe it's also worth posting a heads up about this PR in https://github.com/clangd/clangd/discussions/2616

https://github.com/llvm/llvm-project/pull/195963