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

[Amirreza Ashouri via cfe-commits]

AMP999 wrote:

@AaronBallman, does this look okay to you? See https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2023/p1144r9.html#abstract-opdef-trivially-relocatable and https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2023/p2786r3.pdf#subsection.12.4 which both agree on this point.

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