Hide pagination when isLoading is true

- hide pagination
- add test

app/assets/javascripts/registry/explorer/pages/details.vue

@@ -327,6 +327,7 @@ export default {
     </gl-table>
 
     <gl-pagination
+      v-if="!isLoading"
       ref="pagination"
       v-model="currentPage"
       :per-page="tagsPagination.perPage"

spec/frontend/registry/explorer/pages/details_spec.js

@@ -66,6 +66,10 @@ describe('Details Page', () => {
     it('does not have list items', () => {
       expect(findFirstRowItem('rowCheckbox').exists()).toBe(false);
     });
+
+    it('does not show pagination', () => {
+      expect(findPagination().exists()).toBe(false);
+    });
   });
 
   describe('table', () => {