Fix not equal constraint on array property having a range element index on MarkLogic

Due to changes on MarkLogic connector to use range element index when it is available for a property, the NOT EQ constraint didn't work anymore on array property.

This is due to the non propagation on NOT constraint on every items.
For example:

<array>
  <array__item xsi:type="xs:string">bob</array__item>
  <array__item xsi:type="xs:string">pete</array__item>
</array>

This document will match the following NXQL SELECT * FROM Document where array <> 'bob'.

The produced MarkLogic query is currently (just past the array constraint part):

cts:element-query(
  fn:QName("", "array"),
  cts:element-range-query(fn:QName("", "array__item"), "!=", xs:string("bob"))
)

But we expect to have for list:

cts:not-query(
  cts:element-query(
    fn:QName("", "array"),
    cts:element-range-query(fn:QName("", "array__item"), "=", xs:string("bob"))
  )
)