Merge branch 'acet-fix-branches-list-on-cherry-pick-modal-after-merge' into 'master'

Fix loading branches list on cherry pick modal after merge.

Closes #33894

See merge request gitlab-org/gitlab-ce!15306

app/assets/javascripts/vue_merge_request_widget/mr_widget_options.js

+import Project from '~/project';
 import SmartInterval from '~/smart_interval';
 import Flash from '../flash';
 import {
@@ -140,6 +141,7 @@ export default {
             const el = document.createElement('div');
             el.innerHTML = res.body;
             document.body.appendChild(el);
+            Project.initRefSwitcher();
           }
         })
         .catch(() => {

spec/features/merge_requests/widget_spec.rb

@@ -63,6 +63,18 @@ describe 'Merge request', :js do
       expect(page).to have_selector('.accept-merge-request')
       expect(find('.accept-merge-request')['disabled']).not_to be(true)
     end
+
+    it 'allows me to merge, see cherry-pick modal and load branches list' do
+      wait_for_requests
+      click_button 'Merge'
+
+      wait_for_requests
+      click_link 'Cherry-pick'
+      page.find('.js-project-refs-dropdown').click
+      wait_for_requests
+
+      expect(page.all('.js-cherry-pick-form .dropdown-content li').size).to be > 1
+    end
   end
 
   context 'view merge request with external CI service' do