Updating how the articles "updated_at" filter works. (#2215)

For the articles "updated_at" filter, consider only the articles that were actually changed after they were created. By default, it would include articles that were created but not changed.

Fixes: CV2-5851.

app/models/team.rb

@@ -497,7 +497,7 @@ def filtered_explainers(filters = {})
     query = query.where(user_id: filters[:user_ids].to_a.map(&:to_i)) unless filters[:user_ids].blank?
 
     # Filter by date
-    query = query.where(updated_at: Range.new(*format_times_search_range_filter(JSON.parse(filters[:updated_at]), nil))) unless filters[:updated_at].blank?
+    query = query.where('explainers.created_at != explainers.updated_at').where(updated_at: Range.new(*format_times_search_range_filter(JSON.parse(filters[:updated_at]), nil))) unless filters[:updated_at].blank?
     query = query.where(created_at: Range.new(*format_times_search_range_filter(JSON.parse(filters[:created_at]), nil))) unless filters[:created_at].blank?
 
     # Filter by trashed
@@ -529,7 +529,7 @@ def filtered_fact_checks(filters = {})
     query = query.where('fact_checks.user_id' => filters[:user_ids].to_a.map(&:to_i)) unless filters[:user_ids].blank?
 
     # Filter by date
-    query = query.where('fact_checks.updated_at' => Range.new(*format_times_search_range_filter(JSON.parse(filters[:updated_at]), nil))) unless filters[:updated_at].blank?
+    query = query.where('fact_checks.created_at != fact_checks.updated_at').where('fact_checks.updated_at' => Range.new(*format_times_search_range_filter(JSON.parse(filters[:updated_at]), nil))) unless filters[:updated_at].blank?
     query = query.where('fact_checks.created_at' => Range.new(*format_times_search_range_filter(JSON.parse(filters[:created_at]), nil))) unless filters[:created_at].blank?
 
     # Filter by publisher