[llvm-branch-commits] [clang] Backport: [clang] fix matching of nested template template parameters (PR #130950)

[Mike Lothian via llvm-branch-commits]

FireBurn wrote:

The reduced case works assuming you mean:

```
template <template <template <typename...> typename> typename>
struct foo {};

template <template <typename> typename>
struct bar {};

using baz = foo<bar>;
```

https://github.com/llvm/llvm-project/pull/130950