Allocates the capped number of visible items between the Active and Restored sections of the
overview. When both sections are non-empty, up to RESTORED_MIN_RESERVATION slots are
reserved for Restored so active sessions cannot crowd it out entirely. A cap of 0 hides the
inline list (every session stays reachable via the "Browse all chats..." link).
Allocates the capped number of visible items between the Active and Restored sections of the overview. When both sections are non-empty, up to RESTORED_MIN_RESERVATION slots are reserved for Restored so active sessions cannot crowd it out entirely. A cap of 0 hides the inline list (every session stays reachable via the "Browse all chats..." link).