add overrides for release beta canary

Author: mansona

smoke-test-app/tests/dummy/config/ember-try.js

@@ -30,6 +30,9 @@ module.exports = async function () {
           devDependencies: {
             'ember-source': await getChannelURL('release'),
           },
+          overrides: {
+            'ember-source': '$ember-source',
+          },
         },
       },
       {
@@ -38,6 +41,9 @@ module.exports = async function () {
           devDependencies: {
             'ember-source': await getChannelURL('beta'),
           },
+          overrides: {
+            'ember-source': '$ember-source',
+          },
         },
       },
       {
@@ -46,6 +52,9 @@ module.exports = async function () {
           devDependencies: {
             'ember-source': await getChannelURL('canary'),
           },
+          overrides: {
+            'ember-source': '$ember-source',
+          },
         },
       },
       {
@@ -64,6 +73,9 @@ module.exports = async function () {
           ember: {
             edition: 'classic',
           },
+          overrides: {
+            'ember-source': '$ember-source',
+          },
         },
       },
       embroiderSafe(),