The Koin application is looked up in the Context tree and the Koin CompositionLocals are provided with/from this value.
This (still) requires this function to be called around the first time Koin is used from Compose.
A practical place for this is the setContent function.
This means that (boilerplate) code needs to be added to every Activity or Fragment using Compose, and every test case where a Composable is tested in isolation.

Untested - will need verification with these test frameworks!

Fixes InsertKoinIOgh-1557

By throwing an exception as default factory for the CompositionLocals we signal that there is no explicit value set. This will trigger the default lookup behavior that used to be the result of the factory function, as long as the appropriate functions getKoin() and getKoinScope() are used. By using the internal Compose API we are able to catch the exception to run the lookup code. We remember the result of the try/catch block to ensure we only incur the overhead of the exception once per `getKoin()` call per composition.

Performance analysis and testing necessary!

Fixes InsertKoinIOgh-1557