Temporary fix for babel env in babel 7

Will fix this as soon as we land

Author: CompuIves

packages/app/src/sandbox/eval/transpilers/babel/worker/babel-worker.js

@@ -255,11 +255,20 @@ self.addEventListener('message', async event => {
   if (!disableCodeSandboxPlugins) {
     if (
       flattenedPresets.indexOf('env') > -1 &&
-      Object.keys(Babel.availablePresets).indexOf('env') === -1
+      Object.keys(Babel.availablePresets).indexOf('env') === -1 &&
+      version !== 7
     ) {
       Babel.registerPreset('env', Babel.availablePresets.latest);
     }
 
+    if (
+      flattenedPresets.indexOf('env') > -1 &&
+      Object.keys(Babel.availablePresets).indexOf('env') === -1 &&
+      version === 7
+    ) {
+      Babel.registerPreset('env', Babel.availablePresets.es2015);
+    }
+
     if (
       flattenedPlugins.indexOf('transform-vue-jsx') > -1 &&
       Object.keys(Babel.availablePlugins).indexOf('transform-vue-jsx') === -1