DS-2180 Fix sorting by date accessioned in xmlui My Archived Submissions

https://jira.duraspace.org/browse/DS-2180 - My Archived Submissions in XMLUI not actually sorting by date

This work was sponsored by [The Ohio State University Libraries](http://library.osu.edu/)
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The My Archived Submissions in XMLUI was not really being sorted properly. It was doing something where it would add entries to an array, the approach I'm taking is to just use the DB to sort the item's this user has submitted by date accessioned.