Describe how payment account details are used when creating account [0.2 XMR]
This issue requests adding a description of how payment account details are used when adding a new payment account.

The description should be added as a line of text after "Create new account" in the following screenshot:

<img width="1197" alt="image" src="https://github.com/user-attachments/assets/792a2d6f-84c7-42e7-ada1-ddf63d312baf">


An appropriate description is: "Your payment account details are stored locally on your device and shared only with your trading peer and the arbitrator if a dispute is opened."