VAULT-13220 use decorator instead of extending overview route (#19294)

ui/lib/pki/addon/routes/overview.js

@@ -1,24 +1,14 @@
 import Route from '@ember/routing/route';
 import { inject as service } from '@ember/service';
+import { withConfig } from 'pki/decorators/check-config';
 import { hash } from 'rsvp';
 
+@withConfig()
 export default class PkiOverviewRoute extends Route {
   @service secretMountPath;
   @service auth;
   @service store;
 
-  hasConfig() {
-    // When the engine is configured, it creates a default issuer.
-    // If the issuers list is empty, we know it hasn't been configured
-    return (
-      this.store
-        .query('pki/issuer', { backend: this.secretMountPath.currentPath })
-        .then(() => true)
-        // this endpoint is unauthenticated, so we're not worried about permissions errors
-        .catch(() => false)
-    );
-  }
-
   async fetchAllRoles() {
     try {
       return await this.store.query('pki/role', { backend: this.secretMountPath.currentPath });
@@ -37,7 +27,7 @@ export default class PkiOverviewRoute extends Route {
 
   async model() {
     return hash({
-      hasConfig: this.hasConfig(),
+      hasConfig: this.shouldPromptConfig,
       engine: this.modelFor('application'),
       roles: this.fetchAllRoles(),
       issuers: this.fetchAllIssuers(),