Fix Vue 3 failing test

Negative index is not
supported in VUE 3

EE: true

ee/spec/frontend/vulnerabilities/generic_report/types/list_graphql_spec.js

@@ -58,7 +58,8 @@ describe('ee/vulnerabilities/components/generic_report/types/report_type_list_gr
     });
 
     it('applies the correct classes to the list items', () => {
-      const lastItem = findListItems().at(-1);
+      const lastIndex = items.length - 1;
+      const lastItem = findListItems().at(lastIndex);
       expect(lastItem.classes().includes('!gl-list-none')).toBe(hasNestedList);
     });
   });

scripts/frontend/quarantined_vue3_specs.txt

@@ -105,7 +105,6 @@ ee/spec/frontend/users/identity_verification/components/verify_phone_verificatio
 ee/spec/frontend/vue_merge_request_widget/components/mr_widget_pipeline_container_spec.js
 ee/spec/frontend/vue_shared/components/groups_list/groups_list_item_spec.js
 ee/spec/frontend/vue_shared/components/projects_list/projects_list_item_spec.js
-ee/spec/frontend/vulnerabilities/generic_report/types/list_graphql_spec.js
 ee/spec/frontend/vulnerabilities/related_issues_spec.js
 spec/frontend/__helpers__/vue_test_utils_helper_spec.js
 spec/frontend/access_tokens/index_spec.js