FIX: Missing events for ReviewableUser migration

db/migrate/20190110212005_create_reviewable_histories.rb

@@ -12,6 +12,25 @@ class CreateReviewableHistories < ActiveRecord::Migration[5.2]
     add_index :reviewable_histories, :reviewable_id
 
     # Migrate Created ReviewableUser History
+    execute(<<~SQL)
+      INSERT INTO reviewable_histories (
+        reviewable_id,
+        reviewable_history_type,
+        status,
+        created_by_id,
+        created_at,
+        updated_at
+      )
+      SELECT r.id,
+        0,
+        0,
+        r.created_by_id,
+        r.created_at,
+        r.created_at
+      FROM reviewables AS r
+      WHERE r.type = 'ReviewableUser'
+    SQL
+
     execute(<<~SQL)
       INSERT INTO reviewable_histories (
         reviewable_id,