Same. Thought I was going crazy. One build worked yesterday and then with minimal changes it just stopped working. Tried so many things in the past 24hours ish. Glad to see I am not completely insane. Unity version 2019.4. Xcode 13.4. Also switched over to cloud build on Unity in hopes that would fix it but it did not.

We just figured this one out today. Go to your identifer tab in the developer.apple.com website. If your account is approved for enterprise then you have a 3rd tab here. Capabilities, App service, and then a new 3rd tab (forgetting name). In that tab there is "main camera" access when you need to check for your application. You'll need to create a new provisioning profile after this.