[clang] [clang-tools-extra] Move isLocal AST matcher to ASTMatchers (PR #117521)

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:warning: C/C++ code formatter, clang-format found issues in your code. :warning:

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git-clang-format --diff a0ef12c64284abf59bc092b2535cce1247d5f9a4 ee0c3b11c93dc8d95f521cda7c2ac9acc7c184f7 --extensions cpp,h -- clang-tools-extra/clang-tidy/misc/ConstCorrectnessCheck.cpp clang/include/clang/ASTMatchers/ASTMatchers.h
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View the diff from clang-format here.
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``````````diff
diff --git a/clang/include/clang/ASTMatchers/ASTMatchers.h b/clang/include/clang/ASTMatchers/ASTMatchers.h
index f8388028d2..98993a19a0 100644
--- a/clang/include/clang/ASTMatchers/ASTMatchers.h
+++ b/clang/include/clang/ASTMatchers/ASTMatchers.h
@@ -740,9 +740,7 @@ AST_MATCHER(FunctionDecl, isMain) {
 }
 
 // Matches variable declarations that represent local variables.
-AST_MATCHER(VarDecl, isLocal) { 
-    return Node.isLocalVarDecl(); 
-}
+AST_MATCHER(VarDecl, isLocal) { return Node.isLocalVarDecl(); }
 
 /// Matches the specialized template of a specialization declaration.
 ///

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https://github.com/llvm/llvm-project/pull/117521