[Event Hubs] Websocket errors in node are translated to [object Object]

[the-ress]

• Package Name: @azure/core-amqp
• Package Version: 4.2.1
• Operating system: Windows
• [x] nodejs
  • version: v20.11.1
• [ ] browser
  • name/version:
• [ ] typescript
  • version:
• Is the bug related to documentation in
  • [ ] README.md
  • [ ] source code documentation
  • [ ] SDK API docs on https://docs.microsoft.com

Describe the bug CbsClient throws Error: [object Object] instead of the actual error when using websocket in node.

To Reproduce Steps to reproduce the behavior:

1. Install @azure/core-amqp and ws
2. Save the javascript code below as repro.js
3. Run node repro.js

repro.js contents

```javascript const { ConnectionContextBase } = require('@azure/core-amqp'); const { WebSocket } = require('ws'); const ctx = ConnectionContextBase.create({ config: { webSocket: WebSocket, endpoint: 'sb://example.invalid/', host: 'example.invalid', connectionString: 'Endpoint=sb://example.invalid/', sharedAccessKeyName: 'test', sharedAccessKey: 'test', }, connectionProperties: { userAgent: 'test', }, }); ctx.cbsSession.init() .catch(console.log); ```

Expected behavior CbsSession.init should throw something like Error: getaddrinfo ENOTFOUND example.invalid.

Actual behavior CbsSession.init throws an error with a meaningless message:

Error: [object Object]
    at translate (C:\Code\azure-websocket-error-repro\node_modules\@azure\core-amqp\dist\index.js:1076:42)
    at CbsClient.init (C:\Code\azure-websocket-error-repro\node_modules\@azure\core-amqp\dist\index.js:1688:37)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)

Additional context This is a minimal repro case. The real world scenario involves @azure/event-hubs and intermittent internet connection.

The websocket library throws an ErrorEvent object and core-amqp tries to convert it to a string, producing [object Object]. Earlier in that function, there's code handling websocket errors, but it doesn't cover node and doesn't propagate the specific error either.

Screenshots The actual error in my real world scenario.

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@jeremymeng @maorleger @mpodwysocki

[github-actions[bot]]

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