Add ember-focus-trap to test-app, due to Embroider bug

Author: simonihmig

packages/test-app/package.json

@@ -46,6 +46,7 @@
     "ember-data": "~4.3.0",
     "ember-export-application-global": "^2.0.1",
     "ember-fetch": "^8.1.1",
+    "ember-focus-trap": "^1.0.1",
     "ember-load-initializers": "^2.1.2",
     "ember-page-title": "^7.0.0",
     "ember-qunit": "^5.1.5",

yarn.lock

@@ -5432,7 +5432,7 @@ ember-fetch@^8.1.1:
     node-fetch "^2.6.1"
     whatwg-fetch "^3.6.2"
 
-ember-focus-trap@^1.0.0:
+ember-focus-trap@^1.0.0, ember-focus-trap@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/ember-focus-trap/-/ember-focus-trap-1.0.1.tgz#a99565f6ce55d500b92a0965e79e3ad04219f157"
   integrity sha512-ZUyq5ZkIuXp+ng9rCMkqBh36/V95PltL7iljStkma4+651xlAy3Z84L9WOu/uOJyVpNUxii8RJBbAySHV6c+RQ==