FIT KV: SubdocMutationTest - Array Bugs

Some tests are failing with what appears to be the same issue:

1. arrayPrepend
2. arrayPrependMulti
3. arrayPrependXattr
4. arrayPrependCreatePath
5. arrayAppendCreatePath
6. arrayAppendMulti
7. arrayAppendXattr
8. arrayAppend
9. arrayInsert
10. arrayPrependXattrCreatePath
11. arrayInsertMulti
12. arrayInsertXattr
13. arrayAppendXattrCreatePath

All fail with a similar output to these:

// Some comments here

Expected :["hello","cruel","mars","world"]

Actual   :["hello",["cruel","mars"],"world"]

-----

Expected :["world"]

Actual   :[["world"]]

This could be an error in how the performer serializes the content, or how the SDK does.