forc-call transaction output too large

The transaction output is vdery large if large `--amount` is provided/transferred; this is incorrect behaviour.
The UTXO output should not be based on the amount.

Example live transaction (which hard large output):

<img width="1680" height="1808" alt="Image" src="https://github.com/user-attachments/assets/3b24b471-73d7-45f1-8218-8c3b01a9c2d6" />