[clang] [HLSL] Allow truncation to scalar (PR #104844)

[Eli Friedman via cfe-commits]

https://github.com/efriedma-quic commented:

ExprConstant.cpp currently assumes that an CK_HLSLVectorTruncation can't return a scalar type.

https://github.com/llvm/llvm-project/pull/104844