fix: 修复 undo 和 redo 中选中节点快照不对称及重做定位问题

src/store/editor/index.ts

@@ -783,15 +783,15 @@ export const useEditorStore = defineStore('editor', {
         undo() {
             if (this.undoStack.length === 0 || !this.xmlTree) return
 
-            const previousSnapshot = this.undoStack.pop()!
-
             const currentClone = JSON.parse(JSON.stringify(this.xmlTree))
             const currentSnapshot = {
                 tree: currentClone,
-                selectedNodeId: previousSnapshot.selectedNodeId || this.selectedNodeId
+                selectedNodeId: this.selectedNodeId
             }
             this.redoStack.push(currentSnapshot)
 
+            const previousSnapshot = this.undoStack.pop()!
+
             this.xmlTree = previousSnapshot.tree
             this.rebuildNodeMap()
             if (previousSnapshot.selectedNodeId && this.hasNode(previousSnapshot.selectedNodeId)) {