[clang-tools-extra] clangd: Make callHierarchy follow inheritance (PR #163024)

[Nathan Ridge via cfe-commits]

================
@@ -181,6 +181,14 @@ class SymbolIndex {
       llvm::function_ref<void(const SymbolID &Subject, const Symbol &Object)>
           Callback) const = 0;
 
+  /// Finds all relations (O, P, S) stored in the index such that S is among
+  /// Req.Subjects and P is Req.Predicate, and invokes \p Callback for (S, O) in
+  /// each. Currently only allows the OverridenBy relation.
----------------
HighCommander4 wrote:

nit: OverridenBy --> OverriddenBy

https://github.com/llvm/llvm-project/pull/163024