Fix a bug for pcmp_lt_or_nan and Add sqrt support for SVE

What does this implement/fix?

I made a mistake when replace "_z" with "_x" intrinsics in the last MR: The intrinsics "svnot_b_x" is inexisted, so use "svnot_b_z".

To confirm which intrinsics is existed, we can search it in: https://developer.arm.com/architectures/instruction-sets/intrinsics/

Add support for float sqrt with svsqrt_f32_x intrinsics. I have confirmed it existed. :)

Additional information