[Logs UI] Unskip log highlight api integration test (#71058)

This unskips one log highlighting API test, which was skipped due to changes in the Elasticsearch highlighting behavior.

x-pack/test/api_integration/apis/metrics_ui/log_entry_highlights.ts

@@ -122,9 +122,7 @@ export default function ({ getService }: FtrProviderContext) {
  });
  });
 
- // Skipped since it behaves differently in master and in the 7.X branch
- // See https://github.com/elastic/kibana/issues/49959
- it.skip('highlights field columns', async () => {
+ it('highlights field columns', async () => {
  const { body } = await supertest
  .post(LOG_ENTRIES_HIGHLIGHTS_PATH)
  .set(COMMON_HEADERS)