Yeah, this is likely something that’s configured on an OS level to talk to some server when being sold.
However, note that SIM cards can have a flag that might enable this app (given how much power sim cards have over phones)
Note: no source, just assumptions
Edit: second note: this app isn’t present on my EU OnePlus Nord.
GitHub has a “clone” button, if you click on that you can get git links to download the code. The http-URL doesn’t require authentication.
Edit: I misread the comment that it’s about a different app.