Achieve centralizing imports from Ember (#2669)

Author: mansona

.github/workflows/build.yml

@@ -77,6 +77,7 @@ jobs:
     name: ember-try (${{ matrix.scenario }})
     needs: test
     runs-on: ubuntu-latest
+    timeout-minutes: 10
     env:
       CI: 'true'
     strategy:

ember_debug/utils/ember.js

@@ -189,5 +189,3 @@ export {
   GlimmerUtil,
   GlimmerValidator,
 };
-
-export default Ember;

ember_debug/utils/ember/runloop.js

@@ -8,9 +8,10 @@ let _backburner = runloop._backburner;
 
 const keys = ['cancel', 'debounce', 'join', 'later', 'scheduleOnce'];
 
-module = EmberRunloop;
-_backburner =
-  EmberRunloop._backburner || EmberRunloop.backburner || _backburner;
+if (EmberRunloop) {
+  module = EmberRunloop;
+  _backburner = EmberRunloop._backburner || EmberRunloop.backburner;
+}
 
 if (!keys.every((k) => k in module)) {
   module = runloop;

tests/ember_debug/profile-manager-test.js

@@ -10,12 +10,10 @@ import { hbs } from 'ember-cli-htmlbars';
 import EmberDebug from 'ember-debug/main';
 import setupEmberDebugTest from '../helpers/setup-ember-debug-test';
 import { run } from '@ember/runloop';
-import Ember from 'ember-debug/ember';
+import { VERSION } from 'ember-debug/ember';
 import { compareVersion } from 'ember-debug/version';
 import { setComponentTemplate } from '@ember/component';
 
-const { VERSION } = Ember;
-
 const isComponentHighlightSupported = compareVersion(VERSION, '3.20.0') !== -1;
 
 const getRounded = (value) => {