[FIX] This fixes ember-canary

ember-canary requires `template` + `environment` be provided to the view. This seems like a reasonable change, but does require “low level” libraries such as `@ember/test-helpers` to make some changes.

(Ember PR emberjs/ember.js#19680)

addon-test-support/@ember/test-helpers/setup-rendering-context.ts

@@ -263,7 +263,14 @@ export default function setupRenderingContext(
       let OutletView = owner.factoryFor
         ? owner.factoryFor('view:-outlet')
         : owner._lookupFactory!('view:-outlet');
-      let toplevelView = OutletView.create();
+
+      let environment = owner.lookup('-environment:main');
+      let template = owner.lookup('template:-outlet');
+
+      let toplevelView = OutletView.create({
+        template,
+        environment,
+      });
 
       owner.register('-top-level-view:main', {
         create() {