fix(live-preview-vue): update build config to compile as esm (#14293)

The distributed files for `@payloadcms/live-preview-vue` are compiled to
commonjs instead of ESM, which causes issues in ESM based projects like
when using Nuxt.

This PR fixes this issue by updating the built config to be `es6`,
matching what most other packages are using.

Related to #12806

Author: danielwaltz

.github/workflows/pr-title.yml

@@ -53,6 +53,7 @@ jobs:
             kv-redis
             live-preview
             live-preview-react
+            live-preview-vue
             next
             payload-cloud
             plugin-cloud

packages/live-preview-vue/.swcrc

@@ -10,6 +10,6 @@
     }
   },
   "module": {
-    "type": "commonjs"
+    "type": "es6"
   }
 }