Update package.json

So, there were a few issues with Node >17 and storybookjs (storybookjs/storybook#16623) that was causing errors on build, similarly to preactjs/preact#3745.

It was fixed in the same way by react: facebook/react#22954

Author: thiagojedi

package.json

@@ -34,7 +34,8 @@
       "module": "./jsx-runtime.mjs",
       "import": "./jsx-runtime.mjs",
       "require": "./jsx-runtime.js"
-    }
+    },
+    "./package.json": "./package.json"
   },
   "repository": "preactjs/compat-alias-package",
   "author": "Preact Team <team@preactjs.com>",