[clang-tools-extra] [clang-tidy] Prefer the faster LLVM ADT sets and maps over `std::` ones (PR #174357)

[via cfe-commits]

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@@ -11,6 +11,7 @@
 #include "clang/AST/ASTLambda.h"
 #include "clang/AST/Attr.h"
 #include "clang/AST/Decl.h"
+#include "clang/AST/Expr.h"
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zeyi2 wrote:

Is this header really needed? It looks that `SmallPtrSetImpl` and `DenseMap` would not introduce `Expr` header..

https://github.com/llvm/llvm-project/pull/174357