[clang] [clang] Fix behavior of `__is_trivially_relocatable(volatile int)` (PR #77092)

[Shafik Yaghmour via cfe-commits]

shafik wrote:

I think I would like some more eyes on this, I don't know if it is obvious to me what it means to reallocate a volatile object. 

https://github.com/llvm/llvm-project/pull/77092