fix: remove unused export from scanMissingNodes

Author: jaeone94

src/composables/useMissingNodeScan.ts

@@ -10,7 +10,7 @@ import {
 import { getCnrIdFromNode } from '@/workbench/extensions/manager/utils/missingNodeErrorUtil'
 
 /** Scan the live graph for unregistered node types and build a full MissingNodeType list. */
-export function scanMissingNodes(rootGraph: LGraph): MissingNodeType[] {
+function scanMissingNodes(rootGraph: LGraph): MissingNodeType[] {
   const nodeReplacementStore = useNodeReplacementStore()
   const missingNodeTypes: MissingNodeType[] = []