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:

Added error handling for the send magic link status

Note that the snackbar notice is still under the modal overlay, this needs to be fixed either in layout or in the @wordpress/components Guide component so that'll be done in a separate PR

Closes #34796.

How to test the changes in this Pull Request:

(Skip to 4 if you have set up the mobile app magic link feature previously)

1. Install WooCommerce, skip OBW and do not install Jetpack
2. Click on the "Get the WooCommerce Mobile App" additional task list item
3. Go through with connection process
4. When you click on the "Send Magic Link" button you should see a spinner. Use devtools throttling if its too fast for you 😁
5. Go back by clicking on send magic link again
6. Block the URL in your devtools network panel (see screenshot)
7. You should see the error notice at the bottom of the screen

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 --filter=<project> run changelog add?

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.