fix: resolve react-pdf v7 worker configuration (fixes #330)

[milad-emami]

This PR fixes the failed Renovate bot update (#330) which attempted to update react-pdf from v5 to v7 for security improvements.

Context

Renovate bot PR #330 failed due to breaking changes in react-pdf v7's worker configuration. This PR implements the necessary changes to support v7.

Changes

• Updated react-pdf from v5 to v7
• Fixed PDF worker configuration using unpkg CDN
• Resolves build errors from Renovate bot PR

Technical Details

In react-pdf v7, the PDF worker can't be imported directly from react-pdf package anymore because:

1. The worker file is no longer exported in the package.json exports field
2. Direct import path react-pdf/dist/esm/pdf.worker.entry is not available in v7

Solution Options Considered:

1. Local worker (pdfjs-dist)

   • Requires additional package installation
   • Works offline
   • Increases bundle size

2. CDN approach (Selected)

   pdfjs.GlobalWorkerOptions.workerSrc = `//unpkg.com/pdfjs-dist@${pdfjs.version}/build/pdf.worker.min.js`;

   Benefits:

   • No additional package installation needed
   • Reduces bundle size
   • Worker version automatically matches pdfjs version
   • Reliable and fast through unpkg CDN

Dependencies

• react-pdf: ^7.0.0

Related Issues

• Fixes fix(deps): update dependency react-pdf to v7 [security] #330 (Renovate bot security update)

[openedx-webhooks]

Thanks for the pull request, @milad-emami!

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (e39533c) to head (0f54769).

Additional details and impacted files

@@            Coverage Diff            @@
##            master      #376   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          109       109           
  Lines         1086      1085    -1     
  Branches       165       165           
=========================================
- Hits          1086      1085    -1     

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