feat: fixed saving warnings staying after loading a new program

ref: N25B-450

src/pages/VisProgPage/visualProgrammingUI/components/SaveLoadPanel.tsx

@@ -29,6 +29,8 @@ export default function SaveLoadPanel() {
       const text = await file.text();
       const parsed = JSON.parse(text) as SavedProject;
       if (!parsed.nodes || !parsed.edges) throw new Error("Invalid file format");
+      const {nodes, unregisterWarningsForId} = useFlowStore.getState();
+      nodes.forEach((node) => {unregisterWarningsForId(node.id);});
       setNodes(parsed.nodes);
       setEdges(parsed.edges);
     } catch (e) {