Fix incorrect new group path in import history

* always append / for root

Changelog: fixed

app/assets/javascripts/pages/import/bulk_imports/history/components/bulk_imports_history_app.vue

@@ -111,7 +111,7 @@ export default {
     },
 
     getFullDestinationUrl(params) {
-      return joinPaths(gon.relative_url_root || '', this.getDestinationUrl(params));
+      return joinPaths(gon.relative_url_root || '', '/', this.getDestinationUrl(params));
     },
   },
 

spec/frontend/pages/import/bulk_imports/history/components/bulk_imports_history_app_spec.js

@@ -137,6 +137,16 @@ describe('BulkImportsHistoryApp', () => {
     );
   });
 
+  it('renders correct url for destination group when relative_url is empty', async () => {
+    mock.onGet(API_URL).reply(200, DUMMY_RESPONSE, DEFAULT_HEADERS);
+    createComponent({ shallow: false });
+    await axios.waitForAll();
+
+    expect(wrapper.find('tbody tr a').attributes().href).toBe(
+      `/${DUMMY_RESPONSE[0].destination_namespace}/${DUMMY_RESPONSE[0].destination_name}`,
+    );
+  });
+
   describe('details button', () => {
     beforeEach(() => {
       mock.onGet(API_URL).reply(200, DUMMY_RESPONSE, DEFAULT_HEADERS);