fix(copy campaign): copy display order for canned responses

[ajohn25]

Description

This alters the SQL for copying canned responses, to add the display_order field when canned responses are copied to a new campaign.

Motivation and Context

The changes in #1551 require us to pass this field to avoid violating the unique constraint on display_order. This error was seen on a beta instance.

Postgres error: 
          insert into canned_response (campaign_id, title, text)
          select
            $1 as campaign_id,
            title,
            text
          from canned_response
          where campaign_id = $2
         - duplicate key value violates unique constraint "canned_response_campaign_id_display_order_unique"

How Has This Been Tested?

This has been tested locally

Screenshots (if appropriate):

Documentation Changes

Checklist:

• [ ] My change requires a change to the documentation.
• [ ] I have included updates for the documentation accordingly.