add overrides to ember-try scenarios

Author: mansona

config/ember-try.js

@@ -44,6 +44,9 @@ module.exports = async function () {
           devDependencies: {
             'ember-source': await getChannelURL('release'),
           },
+          overrides: {
+            'ember-source': '$ember-source',
+          },
         },
       },
       {
@@ -52,6 +55,9 @@ module.exports = async function () {
           devDependencies: {
             'ember-source': await getChannelURL('beta'),
           },
+          overrides: {
+            'ember-source': '$ember-source',
+          },
         },
       },
       {
@@ -60,6 +66,9 @@ module.exports = async function () {
           devDependencies: {
             'ember-source': await getChannelURL('canary'),
           },
+          overrides: {
+            'ember-source': '$ember-source',
+          },
         },
       },
       {
@@ -110,6 +119,9 @@ module.exports = async function () {
             'ember-source': await getChannelURL('release'),
             'ember-deprecation-error': '*',
           },
+          overrides: {
+            'ember-source': '$ember-source',
+          },
         },
       },
     ],