[clang-tools-extra] [clang-tidy] Add redundant qualified alias check (PR #180404)

[Yanzuo Liu via cfe-commits]

https://github.com/zwuis commented:

C++23 supports

```cpp
// and switch/for/range-for
if (using Type = NS::Type; condition)
```

but using-declaration is not allowed here.

https://github.com/llvm/llvm-project/pull/180404