The VectorMaskCast node chain can be eliminated in specific patterns, like
`(VectorStoreMask (VectorMaskCast ... (VectorLoadMask x))) => (x)`

And

`(VectorMaskCast (VectorMaskCast  ... (VectorMaskCast x))) => (x)`

Eliminate these VectorMaskCast chain benefits Java codes like:
```
public static int foo() {
  VectorMask<Float> m = VectorMask.fromArray(FloatVector.SPECIES_MAX, ma, 0);
  return m.lastTrue();
}
```