My Jetpack: Prevent red bubble fatals when notification data is malformed

[tbradsha]

Closes MONOREP-131

There was a burst of these recently:

PHP Fatal error: Uncaught TypeError: array_map(): Argument #2 ($array) must be of type array, string given in /wordpress/plugins/jetpack/15.1-a.11/jetpack_vendor/automattic/jetpack-my-jetpack/src/class-red-bubble-notifications.php:46

This PR ensures the data is an array before trying to run array_map() on it.

Proposed changes:

Other information:

• Have you written new tests for your changes, if applicable?
• Have you checked the E2E test CI results, and verified that your changes do not break them?
• Have you tested your changes on WordPress.com, if applicable (if so, you'll see a generated comment below with a script to run)?

Jetpack product discussion

Does this pull request change what data or activity we track or use?

Testing instructions:

I suspect posting a string to /wp-json/my-jetpack/v1/red-bubble-notifications should trigger it, but I'm not familiar with the proper auth required to do a POST. As an aside, I'm not sure why this is using WP_REST_Server::CREATABLE instead of WP_REST_Server::READABLE...

[github-actions]

Are you an Automattician? Please test your changes on all WordPress.com environments to help mitigate accidental explosions.

• To test on WoA, go to the Plugins menu on a WoA dev site. Click on the "Upload" button and follow the upgrade flow to be able to upload, install, and activate the Jetpack Beta plugin. Once the plugin is active, go to Jetpack > Jetpack Beta, select your plugin (Jetpack), and enable the fix/my-jetpack/red_bubble_fatals branch.
• To test on Simple, run the following command on your sandbox:

bin/jetpack-downloader test jetpack fix/my-jetpack/red_bubble_fatals

Interested in more tips and information?

• In your local development environment, use the jetpack rsync command to sync your changes to a WoA dev blog.
• Read more about our development workflow here: PCYsg-eg0-p2
• Figure out when your changes will be shipped to customers here: PCYsg-eg5-p2

[github-actions]

Thank you for your PR!

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[jp-launch-control]

Code Coverage Summary

Coverage changed in 1 file.

File	Coverage	Δ%	Δ Uncovered
projects/packages/my-jetpack/src/class-red-bubble-notifications.php	21/189 (11.11%)	-0.12%	2 ❤️‍🩹

Full summary · PHP report · JS report