Fix group rotation (#1058)

* Update history.js
- Change `BatchCommand.unapply` to use `[...this.commands].reverse()` so the original array is never mutated.
- This preserves the order of commands and ensures history integrity.

packages/svgcanvas/core/history.js

@@ -425,7 +425,7 @@ export class BatchCommand extends Command {
   */
   unapply (handler) {
     super.unapply(handler, () => {
-      this.stack.reverse().forEach((stackItem) => {
+      [...this.stack].reverse().forEach((stackItem) => {
         console.assert(stackItem, 'stack item should not be null')
         stackItem && stackItem.unapply(handler)
       })