Arm64 SVE: Use mask versions of instructions where possible.

Some SVE instructions have both vector and mask versions.

```
TRN1 <Zd>.<T>, <Zn>.<T>, <Zm>.<T>
TRN1 <Pd>.<T>, <Pn>.<T>, <Pm>.<T>
```

Currently if we pass masks into `Sve.TransposeOdd()` then it will convert the masks to vectors and use the vector version. Instead, this should be detected and the mask version used instead.

TODO: Add a list of all the applicable instructions here