Review the use of coroutine scope

Currently, user cannot choose the coroutine scope used in the sdk in most of the methods.
We need to review and update the api so that user can use their own scope.

No files, tests, or entry points are identified. Start by mapping the SDK methods that create or use coroutine scopes and review how their APIs expose scope selection; done means users can supply their own scope in the affected methods without breaking the existing authentication SDK behavior.

Written by the indexing model from the issue text.