[clang] [C23] Fix typeof handling in enum declarations (PR #146394)

[Aaron Ballman via cfe-commits]

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@@ -4210,6 +4215,7 @@ class Parser : public CodeCompletionHandler {
   /// \endverbatim
   ExprResult ParseParenExpression(ParenParseOption &ExprType,
                                   bool stopIfCastExpr, bool isTypeCast,
+                                  bool ParenKnownToBeNonCast,
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AaronBallman wrote:

I ended up picking different names for `TypeCastState` because that was still confusing.

https://github.com/llvm/llvm-project/pull/146394