fix: long symbols wrap on TxApproval and TransactionDetail, and SuccessTx keeps its amount and recipient (closes #743)

TxApproval and TransactionDetail cut off a long symbol, amount or description at
the edge of the screen. These lines now wrap.

SuccessTx hid its Amount and To lines whenever it had a decoded action, even one
that showed neither. Each line is now hidden only when a readable decoded line
shows the same thing. A swap with no Amount line now shows its amount on
SuccessTx, as WaitTx and ErrorTx do.

Model: opus-5-5

README.md

@@ -812,7 +812,9 @@ For a swap whose amount could not be decoded, the amount reads
 Shown when the receipt arrives. The screen holds:
 
 - the heading "Transaction Confirmed";
-- the amount and the recipient, or the decoded action when there is one;
+- the decoded action, when there is one;
+- the amount, unless a line of the decoded action shows it;
+- the recipient, unless a line of the decoded action shows it;
 - the block number, with an explorer link;
 - the transaction hash, with an explorer link;
 - a "Done" button.