Fix 404 when importing gitlab project using right click

app/assets/javascripts/projects/project_new.js

@@ -144,8 +144,8 @@ const bindEvents = () => {
 
   bindHowToImport();
 
-  $('.btn_import_gitlab_project').on('click', () => {
-    const importHref = $('a.btn_import_gitlab_project').attr('href');
+  $('.btn_import_gitlab_project').on('click contextmenu', () => {
+    const importHref = $('a.btn_import_gitlab_project').attr('data-href');
     $('.btn_import_gitlab_project').attr(
       'href',
       `${importHref}?namespace_id=${$(

app/views/projects/_import_project_pane.html.haml

@@ -8,7 +8,7 @@
     .import-buttons
       - if gitlab_project_import_enabled?
         .import_gitlab_project.has-tooltip{ data: { container: 'body', qa_selector: 'gitlab_import_button' } }
-          = link_to new_import_gitlab_project_path, class: 'gl-button btn-default btn btn_import_gitlab_project js-import-project-btn', data: { platform: 'gitlab_export', **tracking_attrs_data(track_label, 'click_button', 'gitlab_export') } do
+          = link_to '#', class: 'gl-button btn-default btn btn_import_gitlab_project js-import-project-btn', data: { href: new_import_gitlab_project_path, platform: 'gitlab_export', **tracking_attrs_data(track_label, 'click_button', 'gitlab_export') } do
             .gl-button-icon
               = sprite_icon('tanuki')
             = _("GitLab export")