[#157855379] Fix bug: restore set-aside doesn't correctly set selection.
[#157855379] Fix bug: restore set-aside doesn't correctly set selection.

Improved identification of existing parent cases in
Collection.findOrCreateCaseForItem() so we don't recreate unnecessary
cases during restore set-aside.

concord-consortium/codap,concord-consortium/codap,concord-consortium/codap,concord-consortium/codap,concord-consortium/codap