fix: clear innerHTML of mindElixirBox on destroy

Author: SSShooter

package.json

@@ -1,6 +1,6 @@
 {
   "name": "mind-elixir",
-  "version": "4.3.1",
+  "version": "4.3.2",
   "type": "module",
   "description": "Mind elixir is a free open source mind map core.",
   "keywords": [

src/methods.ts

@@ -100,7 +100,7 @@ const methods = {
   },
   destroy(this: Partial<MindElixirInstance>) {
     this.disposable!.forEach(fn => fn())
-    this.mindElixirBox?.remove()
+    if (this.mindElixirBox) this.mindElixirBox.innerHTML = ''
     this.mindElixirBox = undefined
     this.nodeData = undefined
     this.arrows = undefined