fix: rename blog overview section to latest posts

[Devansh-365]

Description

This PR fixes the navigation confusion by renaming the main blog listing from "Overview" to "Latest Posts" while keeping the category-specific section as "Overview".

What type of PR is this? (check all applicable)

• 💡 Feature
• 🐛 Bug Fix
• 📝 Documentation Update
• 🎨 Style
• 🧑‍💻 Code Refactor
• 🔥 Performance Improvements
• ✅ Test
• 🤖 Build
• 🔁 CI
• 📦 Chore (Release)
• ⏩ Revert

Related Tickets & Documents

Fixes #18

Mobile & Desktop Screenshots/Recordings

Changes to BlogLayoutHero component:

• Renamed the "Overview" category link to "Latest Posts" in the main navigation.
• Updated the "Overview" category link to "Latest Posts" in the mobile navigation.

Steps to QA

1. Navigate to /blog
2. Verify main section shows "Latest Posts" instead of "Overview"
3. Navigate to blog categories
4. Verify category-specific section still shows "Overview"
5. Check that all navigation links work correctly
6. Test on both mobile and desktop viewports

Added to documentation?

• 📜 README.md
• 🙅 no documentation needed

[optional] Are there any post-deployment tasks we need to perform?

[optional] What gif best describes this PR or how it makes you feel?

[vercel]

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[Codehagen]

Looks good to me