fix: normalize date parsing for Safari browser compatibility

[duongynhi000005-oss]

Fixes #1411

Changes

• Add helper that converts space-separated datetimes to ISO-8601 with T separator (Safari fix)
• Auto-append 'Z' suffix for timezone-naive strings so Safari parses them correctly
• Add try/catch for robust error handling — invalid dates return 'Invalid Date' instead of throwing
• Add unit tests for various date formats (ISO with Z, without Z, space-separated, date-only, with timezone offset, garbage strings)

Safari Issue

Safari's constructor rejects format (space between date and time) but accepts . This fix normalizes the format before parsing.

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[ritesh-1918]

Hi @duongynhi000005-oss! 🙌

Thank you so much for your excellent contribution: "fix: normalize date parsing for Safari browser compatibility"! We really appreciate the high-quality code and effort you have put into the platform.

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[ritesh-1918]

Hi @duongynhi000005-oss! 🙌

Thank you so much for your excellent contribution: "fix: normalize date parsing for Safari browser compatibility"! We really appreciate the high-quality code and effort you have put into the platform.

Just a quick, friendly heads-up as we prepare our manual merging and verification queues—please make sure to complete all the mandatory community steps listed below.

⚠️ Quick leaderboard tip: To secure the absolute highest GSSoC point tier for your contribution, please make sure you are following our project admin @ritesh-1918 manually on GitHub. Having all four onboarding steps cleared is highly preferable for manual PR approvals! ✨

Once those manual steps are verified, we'll get your PR officially merged into the gssoc branch (or keep it neatly cataloged if closed as integrated) and assign it the highest possible GSSoC S-Tier labels to maximize your leaderboard points!

Let's build something amazing together! 🚀🔥

---

🌟 Project Support & Developer Network (Show Some Love!)

As we prepare our manual verification and merging queues, please take a quick moment to ensure you have completed all four community steps:

1. ⭐ Star this repository: Helps our AI helpdesk get noticed! Star the repo here
2. 🍴 Fork this repository: Keep a copy to build your own cool tools! Fork here
3. 👤 Follow @ritesh-1918 on GitHub: Stay updated on real-time open-source projects! Follow ritesh-1918 here
4. 💼 Connect on LinkedIn: Let's build a strong engineering connection! Connect with Ritesh on LinkedIn

Note: Having all four steps completed manually is required before your PR points are officially cleared.

[ritesh-1918]

Merged locally into gssoc branch. Thank you for your GSSoC contribution! 🚀🔥