[clang] [Clang][Sema] fix a bug on template partial specialization (PR #89862)

[Qizhi Hu via cfe-commits]

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@@ -7706,7 +7706,7 @@ ExprResult Sema::CheckTemplateArgument(NonTypeTemplateParmDecl *Param,
     // FIXME: The language rules don't say what happens in this case.
     // FIXME: We get an opaque dependent type out of decltype(auto) if the
     // expression is merely instantiation-dependent; is this enough?
-    if (CTAK == CTAK_Deduced && Arg->isTypeDependent()) {
+    if (Arg->isTypeDependent()) {
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jcsxky wrote:

After looking into the code a bit more, I think this won't happen since the type of `Arg` can't be dependent if the condition `CTAK == CTAK_DeducedFromArrayBound` holds. Because it has been deduced as a certain expression at the moment.

https://github.com/llvm/llvm-project/pull/89862