Feature request: improvement of secondary account icon visualization (iPadOS/macOS)

[vdbm]

At the moment, after adding a secondary account:

• the secondary icon is added to the bottom of the left navigation bar when in the primary account
• the secondary icon is added right underneath the primary account icon when in the secondary account

Much better would be an approach like in Ivory: secondary account icon is hidden when in primary account, and only shows up when clicking on the primary account icon (the same action which also allows you to switch accounts)