fix: ecosystem projects are filtered with union instead of intersection

[DiogoSoaress]

What it solves

Resolves #235

How this PR fixes it

• Ecosystem page projects are shown if they contain any secondary category instead of all the selected ones

[github-actions]

ESLint Summary View Full Report

Annotations are provided inline on the Files Changed tab. You can also see all annotations that were generated on the annotations page.

Type	Occurrences	Fixable
Errors	0	0
Warnings	0	0
Ignored	0	N/A

• Result: ✅ success
• Annotations: 0 total

---

^{Report generated by eslint-plus-action}

[github-actions]

Branch preview

✅ Deployed to dev:

https://safe-web-landing.dev.5afe.dev