add test for order confirmed event

[lkostrowski]

Scope of the PR

Related issues

Checklist

• [ ] I added changesets and read good practices.

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Name	Status	Preview	Comments	Updated (UTC)
saleor-app-avatax	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Oct 2, 2024 10:18am

6 Skipped Deployments

| Name | Status | Preview | Comments | Updated (UTC) | | :--- | :----- | :------ | :------- | :------ | | **saleor-app-cms** | ⬜️ Skipped ([Inspect](https://vercel.com/saleorcommerce/saleor-app-cms/5x8qd5VJzfM5LSwhFn7A62ZGUxAS)) | | | Oct 2, 2024 10:18am | | **saleor-app-data-importer** | ⬜️ Skipped ([Inspect](https://vercel.com/saleorcommerce/saleor-app-data-importer/9vtCZsffduJ5ubzu5HeNtd3NXZdx)) | | | Oct 2, 2024 10:18am | | **saleor-app-klaviyo** | ⬜️ Skipped ([Inspect](https://vercel.com/saleorcommerce/saleor-app-klaviyo/DE5VdKz28tv6NNkzXN7DJbADD13A)) | | | Oct 2, 2024 10:18am | | **saleor-app-products-feed** | ⬜️ Skipped ([Inspect](https://vercel.com/saleorcommerce/saleor-app-products-feed/FjCeHqyvV8TVFLTQNfUvjQRBWoC9)) | | | Oct 2, 2024 10:18am | | **saleor-app-search** | ⬜️ Skipped ([Inspect](https://vercel.com/saleorcommerce/saleor-app-search/Bp4AfXMhdpcWu3PsxkZunQ3bDbWv)) | | | Oct 2, 2024 10:18am | | **saleor-app-smtp** | ⬜️ Skipped ([Inspect](https://vercel.com/saleorcommerce/saleor-app-smtp/5xizHDDK5obJH5b9c8bEgge8eHMy)) | | | Oct 2, 2024 10:18am |