Fix/33253 fix order number in notice

[CacheMeOwside]

All Submissions:

• Have you followed the WooCommerce Contributing guideline?
• Does your code follow the WordPress' coding standards?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?

Changes proposed in this Pull Request:

This PR fixes the incorrect count of order numbers displayed in the 'Order status changed' and 'Removed personal data' notices after bulk editing a large number of orders ( > 999 ).

The problem lies in this line of code :

sprintf( _n( '%s order status changed.', '%d order statuses changed.', $number, 'woocommerce' ), number_format_i18n( $number ) )

So, if $number is 1000, number_format_i18n() converts it into string '1,000' which sprintf() renders as '1' due to the specifier %d, which treats the resultant string ('1,000') as an integer and renders it as a (signed) decimal number.
I have replaced the %d with %s for both 'Order status changed' and 'Removed personal data' notices.

With this fix, the order count will reflect correctly in the notice :

Closes #33253

How to test the changes in this Pull Request:

1. Setup a WooCommerce store with one product
2. Go to the Orders page with this link:
   /wp-admin/edit.php?post_type=shop_order&paged=1&bulk_action=marked_completed&changed=9999
3. Check the notice message

OR

1. Setup a WooCommerce store with one product
2. Make a large number of orders (at least 9999)
3. Mark all orders as "completed"
4. Check the notice message

Other information:

• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you written new tests for your changes, as applicable?
• Have you successfully run tests with your changes locally?
• Have you created a changelog file for each project being changed, ie pnpm changelog add --filter=<project>?

FOR PR REVIEWER ONLY:

• I have reviewed that everything is sanitized/escaped appropriately for any SQL or XSS injection possibilities. I made sure Linting is not ignored or disabled.

[github-actions]

Hi @barryhughes, thanks for merging this pull request. Please take a look at these follow-up tasks you may need to perform:

• Add the release: add testing instructions label