Fix CDN usage in GitHubFileDownloader

[takenagain]

Summary

• fix CDN url usage when downloading folders in GitHubFileDownloader
• rename _fetchFileContent argument

Testing

• flutter pub get --enforce-lockfile --offline
• dart format packages/komodo_wallet_build_transformer/lib/src/steps/github/github_file_downloader.dart
• dart fix --apply
• flutter analyze (fails: many existing issues)
• flutter build web (fails to fetch packages offline)

Summary by CodeRabbit

• Refactor
  • Improved the reliability of file downloads from GitHub repositories by standardizing how download URLs are constructed, ensuring files are fetched accurately based on the repository commit.

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Walkthrough

The code refactors methods in the GitHub file downloader to standardize file download URL construction using a new helper. Method signatures are updated to pass repository commit information, ensuring download URLs are correctly generated for each file and commit. The changes affect both asynchronous and synchronous folder content downloads.

Changes

File(s)	Change Summary
packages/komodo_wallet_build_transformer/lib/src/steps/github/github_file_downloader.dart	Refactored URL construction logic; updated method signatures to accept repo commit; added helper method for building download URLs; ensured all folder downloads use updated URLs.

Poem

A rabbit hops through code so neat,
Download URLs now complete!
With helper paws, commits in tow,
Each file’s path will surely show.
Refactored flows, a tidy den—
GitHub files fetched once again!
🐇✨

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[Copilot]

Pull Request Overview

This pull request fixes the CDN URL usage in GitHubFileDownloader and updates the corresponding function signatures and URL-building logic.

• Renames _fetchFileContent’s argument from fileUrl to relativeFilePath
• Introduces a new helper method _buildFileDownloadUrl for consistent URL construction
• Updates calls to _downloadFolderContents and _downloadFolderContentsSync to pass repoCommit

[takenagain]

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[github-actions]

Visit the preview URL for this PR (updated for commit 4f216f0):

https://komodo-defi-sdk--pr65-codex-update-downloa-7xj1on5t.web.app

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