Add sleep delay in post connect

[drc38]

Short delay added to avoid race condition with boot notification message on first connection/boot

[github-actions]

🎉 HACS repository validator action summary 🎉
✅ The repository is not archived
✅ manifest.json file exist
✅ All required keys are present in manifest.json
✅ hacs.json has the 'name' key set
✅ The repository has a description
⚪ Ignored check: brands
✅ The repository has topics
✅ The repository has issues enabled
✅ This day ends with an 'y' (Wednesday)
✅ README.md exists
✅ Requirements validation
✅ Python wheels
✅ HACS load check