[clang] [Clang] Substitute non dependent concepts in constraints (PR #163827)

[Younan Zhang via cfe-commits]

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@@ -5192,6 +5198,46 @@ bool TreeTransform<Derived>::TransformTemplateArguments(
   return false;
 }
 
+template <typename Derived>
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zyn0217 wrote:

How about TransformNonDependentTemplateArguments? (we can have a default IsNonDependentConcept and a client defined implementation)

https://github.com/llvm/llvm-project/pull/163827