[clang] Rework the printing of attributes (PR #87281)

[Vassil Vassilev via cfe-commits]

vgvassilev wrote:

> @vgvassilev I did expect the input to be valid, yes:
> 
> ```
> template<typename T>
> class FinalTemplate final {};
> ```
> 
> Is it not?

The snippet as visualized in github seems to have one too many `final`s: `template <typename T> class final FinalTemplate final {}`

https://github.com/llvm/llvm-project/pull/87281