Improve case when all ledger account are already imported

## Description

Trying to import account when all are already imported looks like this

<img width="271" height="480" alt="Image" src="https://github.com/user-attachments/assets/868b6c18-c002-4b27-b254-4a58bfff3650" />

Reported here https://iotafoundation.slack.com/archives/C057SC8EW15/p1748427425227699