Use tOrKey for actionKey in ConfirmTransactionBase

ui/app/pages/confirm-transaction-base/confirm-transaction-base.component.js

@@ -18,6 +18,7 @@ import AdvancedGasInputs from '../../components/app/gas-customization/advanced-g
 export default class ConfirmTransactionBase extends Component {
   static contextTypes = {
     t: PropTypes.func,
+    tOrKey: PropTypes.func.isRequired,
     metricsEvent: PropTypes.func,
   }
 
@@ -546,7 +547,8 @@ export default class ConfirmTransactionBase extends Component {
         toName={toName}
         toAddress={toAddress}
         showEdit={onEdit && !isTxReprice}
-        action={this.context.t(actionKey) || getMethodName(name) || this.context.t('contractInteraction')}
+        // In the event that the key is falsy (and inherently invalid), use a fallback string
+        action={this.context.tOrKey(actionKey) || getMethodName(name) || this.context.t('contractInteraction')}
         title={title}
         titleComponent={this.renderTitleComponent()}
         subtitle={subtitle}