scripted-diff: Rename SetHex to SetHexDeprecated

SetHex is fragile, because it accepts any non-hex input or any length of
input, without error feedback. This can lead to issues when the input is
truncated or otherwise corrupted.

Document the problem by renaming the method.

In the future, the fragile method should be removed from the public
interface.

-BEGIN VERIFY SCRIPT-
 sed -i 's/SetHex/SetHexDeprecated/g' $( git grep -l SetHex ./src )
-END VERIFY SCRIPT-

src/qt/transactiontablemodel.cpp

@@ -277,7 +277,7 @@ void TransactionTableModel::updateAmountColumnTitle()
 void TransactionTableModel::updateTransaction(const QString &hash, int status, bool showTransaction)
 {
     uint256 updated;
-    updated.SetHex(hash.toStdString());
+    updated.SetHexDeprecated(hash.toStdString());
 
     priv->updateWallet(walletModel->wallet(), updated, status, showTransaction);
 }

src/qt/transactionview.cpp

@@ -396,7 +396,7 @@ void TransactionView::contextualMenu(const QPoint &point)
 
     // check if transaction can be abandoned, disable context menu action in case it doesn't
     uint256 hash;
-    hash.SetHex(selection.at(0).data(TransactionTableModel::TxHashRole).toString().toStdString());
+    hash.SetHexDeprecated(selection.at(0).data(TransactionTableModel::TxHashRole).toString().toStdString());
     abandonAction->setEnabled(model->wallet().transactionCanBeAbandoned(hash));
     bumpFeeAction->setEnabled(model->wallet().transactionCanBeBumped(hash));
     copyAddressAction->setEnabled(GUIUtil::hasEntryData(transactionView, 0, TransactionTableModel::AddressRole));
@@ -416,7 +416,7 @@ void TransactionView::abandonTx()
     // get the hash from the TxHashRole (QVariant / QString)
     uint256 hash;
     QString hashQStr = selection.at(0).data(TransactionTableModel::TxHashRole).toString();
-    hash.SetHex(hashQStr.toStdString());
+    hash.SetHexDeprecated(hashQStr.toStdString());
 
     // Abandon the wallet transaction over the walletModel
     model->wallet().abandonTransaction(hash);
@@ -431,7 +431,7 @@ void TransactionView::bumpFee([[maybe_unused]] bool checked)
     // get the hash from the TxHashRole (QVariant / QString)
     uint256 hash;
     QString hashQStr = selection.at(0).data(TransactionTableModel::TxHashRole).toString();
-    hash.SetHex(hashQStr.toStdString());
+    hash.SetHexDeprecated(hashQStr.toStdString());
 
     // Bump tx fee over the walletModel
     uint256 newHash;