fix: ensure Media Partner image renders consistently across themes

[nandu-99]

What kind of change does this PR introduce?
Bugfix — ensures the "Dev Events" Media Partner image loads properly in both light and dark modes, including after page reloads.

Issue Number:
Closes #1925

Screenshots/videos:

If relevant, did you update the documentation?
Not needed — no documentation changes required.

Summary
This PR fixes an issue where the “Dev Events” image under the Media Partner section failed to render in light mode after a page reload, despite displaying correctly in dark mode.

Does this PR introduce a breaking change?
No — this fix is fully backward-compatible.

Checklist

Please ensure the following tasks are completed before submitting this pull request.

• I have read, understood, and followed the [contributing guidelines](https://github.com/json-schema-org/website/blob/main/CONTRIBUTING.md).
• I have tested the fix in both light and dark modes.
• I have verified that the image renders correctly after a page reload.
• I have added screenshots where applicable.

[github-actions]

built with Refined Cloudflare Pages Action

⚡ Cloudflare Pages Deployment

Name	Status	Preview	Last Commit
website	✅ Ready (View Log)	Visit Preview	2cc4925

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (1a2d4a6) to head (2cc4925).

Additional details and impacted files

@@            Coverage Diff            @@
##              main     #1928   +/-   ##
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  Coverage   100.00%   100.00%           
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  Files           30        30           
  Lines          633       633           
  Branches       196       196           
=========================================
  Hits           633       633           

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[Utkarsh-123github]

Hi @Honyii , do we have any logo for Dev events for light theme ?

[Honyii]

No I didn't have the light mode design for dev events @Utkarsh-123github , @nandu-99 thanks for bringing this up and your enthusiasm is commendable!