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

[via cfe-commits]

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@@ -164,6 +164,17 @@ class IndexClient : public clangd::SymbolIndex {
               });
   }
 
+  void reverseRelations(
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timon-ul wrote:

I hope I added everything correctly here.

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