cached from tracked-toolbox instead of polyfill

Author: mweidner037

addon/components/x-toggle.js

@@ -1,9 +1,9 @@
+import { getOwner } from '@ember/application';
 import { action } from '@ember/object';
+import { guidFor } from '@ember/object/internals';
 import Component from '@glimmer/component';
 import { tracked } from '@glimmer/tracking';
-import { getOwner } from '@ember/application';
-import { guidFor } from '@ember/object/internals';
-import { cached } from '@glimmer/tracking';
+import { cached } from 'tracked-toolbox';
 
 function configValue(configName, defaultValue) {
   return function (target, name) {

package.json

@@ -34,7 +34,8 @@
     "@ember/render-modifiers": "^2.0.3",
     "ember-cli-babel": "^7.26.11",
     "ember-cli-htmlbars": "^6.0.1",
-    "ember-gesture-modifiers": "^5.0.0"
+    "ember-gesture-modifiers": "^5.0.0",
+    "tracked-toolbox": "^3.0.0"
   },
   "devDependencies": {
     "@ember/optional-features": "^2.0.0",