[clang] [Clang][Sema] Fix mismatch of out-of-line definition of template class (PR #102554)

[Qizhi Hu via cfe-commits]

jcsxky wrote:

> I'm sorry but this approach doesn't make sense to me.
> 
> I have to say that I self-assigned the issue hours before this patch (I don't know when you started working on it because you haven't explained anything either), and that means I'll look into that recently since I've also been working on another similar case for template packs. Submitting a (especially unreasonable fix) PR without asking first seems to be very impolite behavior.

I am so sorry for that. Since I had been working on this issue yesterday and I didn't notice that you have assigned it to yourself as I didn't refresh my web page. Feel free to submit your solution if you have a better approach. I will close this PR later. Again, sorry for that and I will do better next time. Thanks for your remind!

https://github.com/llvm/llvm-project/pull/102554