chore: add "main" entry point back to fix backwards compatibility?

package.json

@@ -3,6 +3,7 @@
   "version": "1.14.5",
   "description": "A zero-dependency, ~600 Bytes (minified & gzipped), JS base class for creating reactive custom elements easily",
   "type": "module",
+  "main": "WebComponent.js",
   "exports": {
     ".": {
       "types": "./index.d.ts",

src/index.js

@@ -1,2 +1,2 @@
 export {attachEffect} from './attach-effect.js';
-export {default, WebComponent} from './WebComponent.js';
+export {default as WebComponent} from './WebComponent.js';