feat: 优化部分问题，完善选区功能

src/component/Canvas/CanvasEditor/components/SelectionPanel.vue

@@ -188,17 +188,19 @@ import {
   InvertSelectionCommand,
   FeatherSelectionCommand,
   FillSelectionCommand,
-  CopySelectionToNewLayerCommand,
-  ClearSelectionContentCommand,
+  // CopySelectionToNewLayerCommand,
+  // ClearSelectionContentCommand,
 } from "../commands/SelectionCommands";
 import { ToolCommand } from "../commands/ToolCommands";
 import {
   LassoCutoutCommand,
   ClearSelectionCommand,
-  CutSelectionToNewLayerCommand,
+  // CutSelectionToNewLayerCommand,
 } from "../commands/LassoCutoutCommand";
 
 import { OperationType } from "../utils/layerHelper";
+import { ClearSelectionContentCommand } from "../commands/ClearSelectionContentCommand";
+import { CutSelectionToNewLayerCommand } from "../commands/CutSelectionToNewLayerCommand";
 
 const props = defineProps({
   canvas: {