fix: sortable element undefined error with new beforeUnmount hook

Author: anish2690

package.json

@@ -1,6 +1,6 @@
 {
   "name": "vue-draggable-next",
-  "version": "1.0.7",
+  "version": "1.0.8",
   "description": "",
   "main": "dist/vue-draggable-next.cjs.js",
   "browser": "dist/vue-draggable-next.esm.js",

src/VueDraggableNext.ts

@@ -179,7 +179,10 @@ export const VueDraggableNext = defineComponent({
 	},
 
 	beforeUnmount() {
-		if (this._sortable !== undefined) this._sortable.destroy()
+		try {
+			if (this._sortable !== undefined) this._sortable.destroy()
+		} catch (error) {
+		}
 	},
 
 	computed: {