remove expired from pending filter

app/models/submission.rb

@@ -78,7 +78,8 @@ class Submission < ApplicationRecord
   scope :active, -> { where(archived_at: nil) }
   scope :archived, -> { where.not(archived_at: nil) }
   scope :pending, lambda {
-    where(Submitter.where(Submitter.arel_table[:submission_id].eq(Submission.arel_table[:id])
+    where(expire_at: nil).or(where(expire_at: Time.current..))
+                         .where(Submitter.where(Submitter.arel_table[:submission_id].eq(Submission.arel_table[:id])
                                          .and(Submitter.arel_table[:completed_at].eq(nil))).select(1).arel.exists)
   }
   scope :completed, lambda {