[clang] [clang-tools-extra] [clang] Implement CWG2398 provisional TTP matching to class templates (PR #94981)

[via cfe-commits]

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@@ -134,11 +134,16 @@ static bool hasSameExtendedValue(llvm::APSInt X, llvm::APSInt Y) {
   return X == Y;
 }
 
+/// What kind of PartialOrdering we're performing template argument deduction
----------------
cor3ntin wrote:

```suggestion
/// The kind of PartialOrdering we're performing template argument deduction
```

https://github.com/llvm/llvm-project/pull/94981