Backend language is reset to English after browser refresh

[munxar]

Describe the bug
When the backend language is set to something different as the default en (English), it resets after a browser refresh to English.

To Reproduce
Steps to reproduce the behavior:

1. clean install of vendure
2. go to Super Admin menu
3. change Language to something different than en
4. refresh the browser

Expected behavior
the set language should persist a browser refresh

Environment (please complete the following information):

• @vendure/core version: 2.0.0
• Nodejs version 16.17.1
• Database (mysql/postgres etc): postgres 14.7

Additional context
It looks like this behaviour affects the other settings like locale and currency too.