fix: catch exception from fetch call when download Ripgrep binary

[XiaoleiJia1005]

Issue for this PR

Fixes #21646

Type of change

• Bug fix
• New feature
• Refactor / code improvement
• Documentation

What does this PR do?

Adding a proper .catch() handler around the fetch call responsible for downloading the Ripgrep binary to capture the network exception.
Log the specific target URL that failed to download for debugging purposes.
Throw the existing error RipgrepDownloadFailedError to replace the confusing Unable to connect message.

How did you verify your code works?

bun dev

Screenshots / recordings

Only error message changed, no UI change.
Before

✱ Glob "xxxx.ts" 
Unable to connect. Is the computer able to access the url?

After

✱ Glob "xxxx.ts" 
RipgrepDownloadFailedError

If this is a UI change, please include a screenshot or recording.

Checklist

• I have tested my changes locally
• I have not included unrelated changes in this PR

If you do not follow this template your PR will be automatically rejected.

[github-actions]

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1. Open an issue describing the bug/feature (if one doesn't exist)
2. Add Fixes #<number> or Closes #<number> to this PR description

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[github-actions]

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