IssueNotesRefactor: Fix quick submit spec.

app/assets/javascripts/behaviors/quick_submit.js

@@ -45,7 +45,7 @@ $(document).on('keydown.quick_submit', '.js-quick-submit', (e) => {
   if (!$submitButton.attr('disabled')) {
     $submitButton.trigger('click', [e]);
 
-    if (!gl.utils.isInIssuePage) {
+    if (!gl.utils.isInIssuePage()) {
       $submitButton.disable();
     }
   }

spec/javascripts/behaviors/quick_submit_spec.js

@@ -7,6 +7,7 @@ describe('Quick Submit behavior', () => {
 
   beforeEach(() => {
     loadFixtures('merge_requests/merge_request_with_task_list.html.raw');
+    $('body').attr('data-page', 'projects:merge_requests:show');
     $('form').submit((e) => {
       // Prevent a form submit from moving us off the testing page
       e.preventDefault();