Customer notifications are not using the customer's browser language and defaults to project default language

Summary

When the preferred language is set to use the browser's language, customers notifications are ignoring this setting and defaulting to project's default language

Steps to Reproduce

1. Create a new Service Desk project;
2. Set it's default language to Norwegian, add Swedish as an option;
3. Create a new customer, it's preferred language will be their browser's language;
4. Using a browser in Swedish, log in to the portal and create a new request

Expected Results

• Customer notification will be sent in Swedish

Actual Results

• Customer notification ignores browser language and defaults to Norwegian

Notes

• The request language is correctly set to Swedish but the notification is sent in Norwegian

Workaround

• Have the customer change their preferred language to Swedish