fix(swap): Split approve-and-sign and publish-lock-tx into two states (#498)

* fix(swap): Split approve-and-sign and publish-lock-tx into two states

* fix: cannot get blockchain height

* add RetrievingMoneroBlockheight, RetrievingMoneroBlockheight tauri events

* propagate daemon blcok height fetch error, treat height 0 as error

* check if tx_lock was previously published

src-gui/src/renderer/components/alert/SwapStatusAlert/SwapStatusAlert.tsx

@@ -216,6 +216,10 @@ export function StateAlert({
       }
       return <PunishTimelockExpiredAlert />;
 
+    // If the Bitcoin lock transaction has not been published yet
+    // there is no need to display an alert
+    case BobStateName.BtcLockReadyToPublish:
+      return null;
     default:
       exhaustiveGuard(swap.state_name);
   }