[clang] [clang] fix broken canonicalization of DeducedTemplateSpecializationType (PR #95202)

[Chuanqi Xu via cfe-commits]

https://github.com/ChuanqiXu9 commented:

Oh, thanks. This looks generally good. And it looks like true that I abused the Profile components.

Since this commit aimed to fix a regression, it will be better to have a regression test. WDYT?

https://github.com/llvm/llvm-project/pull/95202