[Good First Issue] 🎌 Add new Japan Fact 299 - Beginner-Friendly Contribution (good-first-issue, <1 min, no setup)

## 🟢 Good First Issue: Add Japan Fact #299 — Beginner-Friendly Open Source Contribution ![Time: 🟢 **No prerequisites needed!** You don't need to clone the repo, install anything, or write code.

> This entire contribution can be done from your browser in under 60 seconds. **Labels:** good first issue, help wanted, hacktoberfest **Language:** JSON (no coding required) **Time:** 'Yozakura' (夜桜) means night-time cherry blossom viewing, often accompanied by lanterns and food stalls. ### 📝 Instruct