fix(AboutModal): update stories to import local assets

[matthewgallo]

Fixes broken images in about modal story

What did you change?

Update about modal story to import tech logos from local story assets directory.

How did you test and verify your work?

Storybook

PR Checklist

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• Reviewed every line of the diff
• Updated documentation and storybook examples
• Wrote passing tests that cover this change
• Addressed any impact on accessibility (a11y)
• Tested for cross-browser consistency
• Validated that this code is ready for review and status checks should pass

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.42%. Comparing base (ffae91a) to head (01aba9a).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7712      +/-   ##
==========================================
+ Coverage   84.41%   84.42%   +0.01%     
==========================================
  Files         428      428              
  Lines       17730    17730              
  Branches     4716     4716              
==========================================
+ Hits        14966    14968       +2     
+ Misses       2764     2762       -2     

Components	Coverage Δ
ibm-products	82.00% <ø> (+0.01%)	⬆️
ibm-products-web-components	91.88% <ø> (ø)

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[anamikaanu96]

I think it was working when I changed to hostedUrls in the PR 🤔

Now its working as expected in Storybook, but not in StackBlitz due to missing asset imports.

To ensure its works in both environments, as mentioned earlier, we could collaborate with a designer to optimize and reduce the file sizes. For example, the Grafana and Ansible logos exceed 70KB, which is likely why they are served via hosted URLs instead of being inlined as Base64.

Base64 is not causing any issue for other two logo's.

#7479 (comment)