chore: add more unit tests

[ovflowd]

This PR adds more unit tests covering functionality on apps/site/util, apps/site/reducers and apps/site/providers

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Name	Status	Preview	Updated (UTC)
nodejs-org	✅ Ready (Inspect)	Visit Preview	Dec 29, 2024 0:23am

[github-actions]

Lighthouse Results

URL	Performance	Accessibility	Best Practices	SEO	Report
/en	🟠 78	🟢 100	🟢 100	🟢 91	🔗
/en/about	🟢 100	🟢 100	🟢 100	🟢 91	🔗
/en/about/previous-releases	🟢 99	🟢 100	🟢 100	🟢 92	🔗
/en/download	🟢 98	🟢 100	🟢 100	🟢 91	🔗
/en/blog	🟢 100	🟢 100	🟢 96	🟢 92	🔗

[github-actions]

Unit Test Coverage Report

Lines	Statements	Branches	Functions
	87.1% (736/845)	72.13% (233/323)	86.33% (139/161)

Unit Test Report

Tests	Skipped	Failures	Errors	Time
185	0 💤	0 ❌	0 🔥	5.491s ⏱️

[AugustinMauroy]

Mostly LGTM, but when you have some const or other thing and and expect you need to add breakline to separate both thing

[ovflowd]

Mostly LGTM, but when you have some const or other thing and and expect you need to add breakline to separate both thing

Can you reference what file you're talking about? Most of this was generated by Copilot. I checked the tests and seem good enough, are you talking about code styling?

[AugustinMauroy]

Suggested change

	expect(reducer(initialState, action)).toEqual(initialState);
	expect(reducer(initialState, action)).toEqual(initialState);

Here for example you can add on breakline it's will give some aire to the code. And that allow to see step on the test

1. const
2. run
3. assert (expect)