[DGA]: backend closed connection when Kibana memory size too small

### Integration Name

Domain Generation Algorithm Detection [dga]

### Dataset Name

_No response_

### Integration Version

2.3.7

### Agent Version

n/a

### Agent Output Type

elasticsearch

### Elasticsearch Version

9.3.3

### OS Version and Architecture

ECH

### Software/API Version

_No response_

### Error Message

`backend closed connection`

### Event Original

_No response_

### What did you do?

On 1 GB Kibana memory size on ECH

```
POST kbn:/api/fleet/epm/packages/dga/2.3.7
{
"force": true
}

# fails
```

Same with installing via
- Integrations page > Add DGA
- Integrations page > Install DGA assets

After increasing Kibana memory size to 2 GB, the installation succeeds

### What did you see?

Kibana 1 GB memory - fails

### What did you expect to see?

Kibana 2 GB memory - success

### Anything else?

This is a known issue, but previously not thought to affect the model on ECH. It's only through testing on the smallest memory size this happens.