Add missing frontend audit flag for testnet4

frontend/src/app/components/transaction/transaction.component.ts

@@ -922,6 +922,11 @@ export class TransactionComponent implements OnInit, AfterViewInit, OnDestroy {
           return false;
         }
         break;
+      case 'testnet4':
+        if (blockHeight < this.stateService.env.TESTNET4_BLOCK_AUDIT_START_HEIGHT) {
+          return false;
+        }
+        break;
       case 'signet':
         if (blockHeight < this.stateService.env.SIGNET_BLOCK_AUDIT_START_HEIGHT) {
           return false;