bug: Download models/engine failed cause api server stop

[hiento09]

Describe the bug
When I download a model or engine with a timeout error, api server then will be stopped

To Reproduce
Steps to reproduce the behavior:

1. Install cortex npm install -g cortexso
2. Start cortex cortex
3. Download engine cortex engines tensorrt-llm init
4. Just turn off your internet connection and run cortex again, you will see the error cortex

Expected behavior
Model or engine should be retried download and api server should not be stopped

Screenshots
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Desktop (please complete the following information):

• OS: [e.g. iOS] Ubuntu 22.04
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context
Add any other context about the problem here.

[dan-menlo]

@vansangpfiev I am reassigning this to the Cortex team - if this issue does not exist for the C++ implementation, you can proceed to close this ticket

[dan-menlo]

Let's close this ticket as it's Cortex JS related.

[dan-menlo]

Referencing this in main issue #1077 and #1072