Fix for unexpected Configuration build errors due to package resolution failing.

[nriedman]

We've seen a recurring issue where, seemingly at random, build errors will stop the app from compiling. The errors typically occur in the AppDelegate in the Account Configuration, and may include messages about "key path not found". It turns out that this is a common issue in which the package resolution fails silently, and Xcode can't find the correct package versions. For a solution, see:

https://github.com/orgs/StanfordSpezi/discussions/75

[PSchmiedmayer]

Thank you for sharing this with the class!