[msan] Handle SSE2 cvt(t?)ps2dq/cvt(t?)pd2dq and cvtpd2ps using handleSSEVectorConvertIntrinsicByProp (#132815)
cvt(t?)ps2dq/cvt(t?)pd2dq and cvtpd2ps are currently handled strictly.
This patch handles them using handleSSEVectorConvertIntrinsicByProp
(from https://github.com/llvm/llvm-project/pull/130705), generalized to
handle SSE intrinsics that do not have a rounding mode parameter.