fix(news-widget): enforce strict UTC date parsing to prevent timezone…

[suvani-ctrl]

Description

This PR fixes a bug where the NewsWidget displays the wrong date for users in Western timezones (for example, showing "31st Dec 2023" instead of "2024-01-01").

The app was using the user's local computer time to read a UTC date string. The bug was fixed by forcing the code to use UTC everywhere (getUTCDate() and timeZone: "UTC"). Now, everyone sees the exact same correct date no matter where they live.

Related issues

Closes #1362

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• New feature (non-breaking change which adds functionality).
• Breaking change (fix or feature that would cause existing functionality to not work as expected).
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[suvani-ctrl]

Hello @regulartim Can you check my pr please !

[regulartim]

Hey @suvani-ctrl ! Your fix is correct and well implemented, as far as I can see. Good work! :)
An explicit regression test that forces a non-UTC TZ (like via process.env.TZ = "America/Los_Angeles") would be a good addition. This test should deterministically fail without your fix but pass when the fix is in place.

[suvani-ctrl]

Hello @regulartim I updated the production code and added the regression test based on your feedback. The fix now forces the news widget to use explicit UTC parsing (getUTCDate() and timeZone: "UTC").. so everyone sees the exact same threat intel dates regardless of their location.

For the regression test, I temporarily mocked the timezone inside the code using process.env.TZ = "America/Los_Angeles" and also cleaned it up in a finally block. I also avoided putting this timezon in a global .env file because changing the timezone globally would break other tests. I verified locally that this new test fails without my fix and passes when the fix is there. All 16 tests seems to pass on mine with my fixes and fail without those fixes. I have attached screenshots for better understandings . Please let me know if this is okay or not.

---> Test Failing before utc updates

-----> Test passing after utc update

[regulartim]

Looks good, thank you! 👍