CV2-5002: fix sentry issue (#1978)

* CV2-5002: fix sentry issue

* CV2-5002: fix tests

app/models/bot/alegre.rb

@@ -611,7 +611,7 @@ def self.is_suggested_to_trash(source, target, relationship_type)
   end
 
   def self.create_relationship(source, target, pm_id_scores, relationship_type, original_source=nil, original_relationship_type=nil)
-    return nil if !self.can_create_relationship?(source, target, relationship_type)
+    return nil if source&.id == target&.id || !self.can_create_relationship?(source, target, relationship_type)
     r = Relationship.where(source_id: source.id, target_id: target.id)
     .where('relationship_type = ? OR relationship_type = ?', Relationship.confirmed_type.to_yaml, Relationship.suggested_type.to_yaml).last
     if r.nil?