fix: preserve error chain in registry validation (fixes #2013)

[gavin913427-hash]

What

Preserve the error chain in registry validation so users can see the full cause of failures.

Why

When registry validation fails, the original error was included in the message text but the error chain (cause property) was lost. This made it difficult to debug issues like:

• Network timeouts
• DNS failures
• SSL errors
• Proxy issues

How

• Wrapped the original error as the cause property of the new error
• This preserves the full error chain for debugging
• The error message still includes the detail for backward compatibility

Changes

File	Change
src/utils/generate/registry.ts	Preserve error chain using cause property

Testing

# Test with invalid registry URL
asyncapi generate asyncapi.yaml @asyncapi/html-template --registry-url https://invalid.example.com
# Error now shows: "Can't fetch registryURL: https://invalid.example.com (...)"
# With cause chain preserved for debugging

Fixes #2013

[changeset-bot]

🦋 Changeset detected

Latest commit: c41ddb1

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@asyncapi/cli	Patch

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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