[clang-tools-extra] [clangd] Re-land "support outgoing calls in call hierarchy" (PR #117673)

[kadir çetinkaya via cfe-commits]

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@@ -83,7 +83,8 @@ std::string toYAML(const Ref &);
 // Build an in-memory static index from an index file.
 // The size should be relatively small, so data can be managed in memory.
 std::unique_ptr<SymbolIndex> loadIndex(llvm::StringRef Filename,
-                                       SymbolOrigin Origin, bool UseDex = true);
+                                       SymbolOrigin Origin, bool UseDex = true,
+                                       bool SupportContainedRefs = true);
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kadircet wrote:

avoiding the default here as well

https://github.com/llvm/llvm-project/pull/117673