[clang] [clang] CTAD alias: fix transformation for require-clause expr Part2. (PR #93533)

[Haojian Wu via cfe-commits]

================
@@ -2882,7 +2899,8 @@ buildAssociatedConstraints(Sema &SemaRef, FunctionTemplateDecl *F,
   // We add the outer template arguments which is [int] to the multi-level arg
   // list to ensure that the occurrence U in `C<U>` will be replaced with int
   // during the substitution.
-  if (F->getInstantiatedFromMemberTemplate()) {
+  if (F->getLexicalDeclContext()->getDeclKind() ==
+      clang::Decl::ClassTemplateSpecialization) {
----------------
hokein wrote:

Not needed. The F here is an instantiated template (either from an explicit deduction guide within a class or a constructor), so its DeclContext cannot be ClassTemplatePartialSpecialization. I made a code comment to clarify it.

https://github.com/llvm/llvm-project/pull/93533