Follow-up from "Draft: msobczyk/encrypt profile"

The following discussions from !554 (merged) should be addressed:

• @mzebrak started a discussion: (+1 comment)

  maybe instead of assertion we can handle this situation?

• @mzebrak started a discussion:

  I wonder if maybe we should have some abstraction layer for keeping and managing AsyncBeekeeper, AsyncSession, and wallets. something like WalletStorage, but that's not part of this MR, to be discussed though.

• @mzebrak started a discussion:

  I wonder if it should be possible to pass EncryptionService via param to SaveProfile/LoadProfile