UI: Ember deprecation prep for 5.0: ember-data:deprecate-array-like (#26170)

* remove .get() from cluster and vault route

* replace .get() use in adapters

* remove .get() from components part 1

* remove .get() from string-list

* remaining components

* controller .get() removal

* remove .get() use in mixins

* routes/cluster/access* .get() replacement

* policy index route

* routes/secrets/backend*

* route/cluster*

* serializers

* is-active-route

* remaining top-level addon gets

* replication get()

* revery change that broke things

* woops, revert other store service change

* revert some controller changes

* revert get on URLSearchParams class

* remove .sortBy ember method

* small cleanup items

* small cleanups from PR review

ui/lib/config-ui/addon/components/messages/page/create-and-edit.js

@@ -40,7 +40,7 @@ export default class MessagesList extends Component {
     super.willDestroy();
     const noTeardown = this.store && !this.store.isDestroying;
     const { model } = this;
-    if (noTeardown && model && model.get('isDirty') && !model.isDestroyed && !model.isDestroying) {
+    if (noTeardown && model && model.isDirty && !model.isDestroyed && !model.isDestroying) {
       model.rollbackAttributes();
     }
   }