2.4.1rc3: Bug fixes and feature improvements

What's Changed

• [2.4] Enable StreamCell for all application channels by @YuanTingHsieh in #2406
• [2.4] Update rr_order to cyclic_order by @SYangster in #2411
• [2.4] Fix mlflow tag links by @YuanTingHsieh in #2417
• [2.4] Add client api send check by @YuanTingHsieh in #2418
• [2.4] Lightning API Patch just once by @YuanTingHsieh in #2416
• [2.4] Fix LauncherExecutor handle_event by @YuanTingHsieh in #2414
• [2.4] Add custom order and early termination to cyclic controller by @YuanTingHsieh in #2422

Full Changelog: 2.4.1rc2...2.4.1rc3