[llvm] [RISCV] Handle zeroinitializer of vector tuple Type (PR #113995)

[Pengcheng Wang via llvm-commits]

https://github.com/wangpc-pp commented:

Than we should add `TargetExtType::HasZeroInit` attribute to `riscv.vector.tuple` type in `llvm/lib/IR/Type.cpp:getTargetTypeInfo`?

https://github.com/llvm/llvm-project/pull/113995