Fix broken specs

Don't add disabled class to loading button

app/assets/javascripts/clusters/clusters_index.js

@@ -13,7 +13,6 @@ const toggleLoadingButton = (button) => {
     button.setAttribute('disabled', true);
   }
 
-  button.classList.toggle('is-disabled');
   button.classList.toggle('is-loading');
 };
 

spec/features/projects/features_visibility_spec.rb

@@ -177,7 +177,7 @@ describe 'Edit Project Settings' do
         click_button "Save changes"
       end
 
-      expect(find(".sharing-permissions")).to have_selector(".project-feature-toggle.disabled", count: 2)
+      expect(find(".sharing-permissions")).to have_selector(".project-feature-toggle.is-disabled", count: 2)
     end
 
     it "shows empty features project homepage" do
@@ -272,10 +272,10 @@ describe 'Edit Project Settings' do
   end
 
   def toggle_feature_off(feature_name)
-    find(".project-feature-controls[data-for=\"#{feature_name}\"] .project-feature-toggle.checked").click
+    find(".project-feature-controls[data-for=\"#{feature_name}\"] .project-feature-toggle.is-checked").click
   end
 
   def toggle_feature_on(feature_name)
-    find(".project-feature-controls[data-for=\"#{feature_name}\"] .project-feature-toggle:not(.checked)").click
+    find(".project-feature-controls[data-for=\"#{feature_name}\"] .project-feature-toggle:not(.is-checked)").click
   end
 end

spec/javascripts/clusters/clusters_index_spec.js

@@ -20,7 +20,7 @@ describe('Clusters table', () => {
       button.click();
 
       expect(button.classList).toContain('is-loading');
-      expect(button.classList).toContain('is-disabled');
+      expect(button.getAttribute('disabled')).toEqual('true');
     });
 
     afterEach(() => {