[clang-tools-extra] [clangd] Don't show inlay hints for __builtin_dump_struct (PR #71366)

[Nathan Ridge via cfe-commits]

https://github.com/HighCommander4 commented:

Is it not possible to tell based on the `CallExpr` only (rather than checking an ancestor of it during traversal of the tree) that "this `CallExpr` is not explicitly written in the source"?

https://github.com/llvm/llvm-project/pull/71366