Change older Paperclip database migrations for consistency (#30204)

db/migrate/20160905150353_create_media_attachments.rb

@@ -4,7 +4,13 @@ class CreateMediaAttachments < ActiveRecord::Migration[5.0]
   def change
     create_table :media_attachments do |t|
       t.integer :status_id, null: true, default: nil
-      t.attachment :file
+
+      # The following corresponds to `t.attachment :file` in an older version of Paperclip
+      t.string :file_file_name
+      t.string :file_content_type
+      t.integer :file_file_size
+      t.datetime :file_updated_at
+
       t.string :remote_url, null: false, default: ''
       t.integer :account_id