[clang] [clang] CTAD: implement the missing IsDeducible constraint for alias templates (PR #89358)

[via cfe-commits]

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@@ -18,6 +18,7 @@
 #include "clang/AST/ExprCXX.h"
 #include "clang/AST/RecursiveASTVisitor.h"
 #include "clang/AST/TemplateName.h"
+#include "clang/AST/Type.h"
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cor3ntin wrote:

Probably not a needed change

https://github.com/llvm/llvm-project/pull/89358