feat(编辑能力): 修复内部对象撤销后粘贴崩溃

ofdgo_res.go

@@ -120,4 +120,5 @@ type CompositeGraphicUnit struct {
 	CompositeGraphicUnit []CompositeGraphicUnit `xml:"CompositeGraphicUnit"`
 	Clips                *Clips                 `xml:"Clips"`
 	Actions              []Action               `xml:"Actions>Action"`
+	states               map[string]editorCompositeState
 }