Remove redundant init code in specs

And pass default value of feature flag from yaml

app/helpers/jira_connect_helper.rb

@@ -2,6 +2,6 @@
 
 module JiraConnectHelper
   def new_jira_connect_ui?
-    Feature.enabled?(:new_jira_connect_ui, type: :development)
+    Feature.enabled?(:new_jira_connect_ui, type: :development, default_enabled: :yaml)
   end
 end

spec/frontend/jira_connect/components/app_spec.js

@@ -24,11 +24,7 @@ describe('JiraConnectApp', () => {
 
   describe('template', () => {
     it('renders new UI', () => {
-      createComponent({
-        provide: {
-          glFeatures: { newJiraConnectUi: true },
-        },
-      });
+      createComponent();
 
       expect(findHeader().exists()).toBe(true);
       expect(findHeaderText()).toBe('Linked namespaces');