fix: Error message component lint errors

ui/core/app/components/error/message.hbs

@@ -1,5 +1,5 @@
-<Rose::Message @title={{t (concat "errors." statusCode ".title")}} @subtitle={{concat (t "errors.titles.error") " " this.status}} @icon={{this.icon}} as |message|>
-  <message.description>{{t (concat "errors." statusCode ".description")}}</message.description>
+<Rose::Message @title={{t (concat "errors." this.messageCode ".title")}} @subtitle={{concat (t "errors.titles.error") " " this.status}} @icon={{this.icon}} as |message|>
+  <message.description>{{t (concat "errors." this.messageCode ".description")}}</message.description>
   {{#if this.helpRoute}}
     <message.link @route={{this.helpRoute}}>{{t "actions.help"}}</message.link>
   {{/if}}

ui/core/app/components/error/message.js

@@ -52,10 +52,10 @@ export default class ErrorMessageComponent extends Message {
    * @return {string}
    */
   @computed('status')
-  get statusCode() {
-    let statusCode = this.status;
-    if(!statuses.includes(statusCode)) statusCode = 'unknown';
-    return statusCode;
+  get messageCode() {
+    let messageCode = this.status;
+    if(!statuses.includes(messageCode)) messageCode = 'unknown';
+    return messageCode;
   }
 
 }