fix(vue): Mark Vue as having no side effects. (#4217)

The vue package has never had any side effects. We should align with the
rest of our SDKS and set the `sideEffects` field in package.json to be
false.

Author: AbhiPrasad

packages/vue/package.json

@@ -88,7 +88,5 @@
       }
     }
   },
-  "sideEffects": [
-    "./src/index.ts"
-  ]
+  "sideEffects": false
 }