fix(dist): vue2 dist mjs

affects: @he-tree/vue

Author: phphe

packages/he-tree-vue/vue2/index.mjs

@@ -1,3 +1,3 @@
-export * from "../dist/v2/index.es.js";
+export * from "../dist/v2/index.mjs";
 // enable this if your library has default export
 // export { default as default } from "../dist/v2/index.es.js";