Changed order of `Past Submissions` in the detailed submission view (#3876)

Fixes #3875. 

Switches order to date submitted in `Related Submission`'s
`Past Submissions`

hypha/apply/funds/views.py

@@ -1117,6 +1117,7 @@ class AdminSubmissionDetailView(ActivityContextMixin, DelegateableView, DetailVi
             self.model.objects.filter(user=self.object.user)
             .current()
             .exclude(id=self.object.id)
+            .order_by("-submit_time")
         )
         if self.object.next:
             other_submissions = other_submissions.exclude(id=self.object.next.id)