[llvm] [Symbolizer, DebugInfo] Clean up LLVMSymbolizer API: const string& -> StringRef (PR #104541)

[via llvm-commits]

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@@ -210,7 +208,7 @@ class LLVMSymbolizer {
       ObjectPairForPathArch;
 
   /// Contains parsed binary for each path, or parsing error.
-  std::map<std::string, CachedBinary> BinaryForPath;
+  std::map<std::string, CachedBinary, std::less<>> BinaryForPath;
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itrofimow wrote:

`std::less<>` is transparent, counterpart to default map `Compare` being `std::less<std::string>`.
This allows to lookup this map by `StringRef` alongside with `std::string`

https://github.com/llvm/llvm-project/pull/104541