Ghost child bridge
### Describe The Bug

I have a single plugin installed in my test instance of Homebridge, which does not have a Child Bridge configured:

<img width="855" alt="Screenshot 2024-11-27 at 10 59 12 PM" src="https://github.com/user-attachments/assets/2751846b-48ba-432d-9c1e-b47e49d3b163"><p>

However in Settings, there is an extra bridge configured, which is not used by the only accessory and is not paired:

<img width="802" alt="Screenshot 2024-11-27 at 11 00 07 PM" src="https://github.com/user-attachments/assets/a18c4c1a-5e26-4513-bd9c-fad1a814be95"><p>

This bridge is not the main Homebridge bridge:

<img width="800" alt="Screenshot 2024-11-27 at 10 59 40 PM" src="https://github.com/user-attachments/assets/59203d3c-1a57-4325-b434-c608219f3ea1"><p>

When I tested installing the plugin from NPM, I configured a bridge, but later went back and unconfigured it. It appears that the bridge was not deleted when removed from the plugin. As you can see in the config below, the plugin is not configured to use a child bridge.

### Logs

_No response_

### Config

```JSON
{
    "bridge": {
        "name": "Homebridge D459",
        "username": "0E:E3:8A:15:D4:59",
        "port": 51046,
        "pin": "755-48-265",
        "advertiser": "bonjour-hap"
    },
    "accessories": [],
    "platforms": [
        {
            "name": "Config",
            "port": 8581,
            "platform": "config",
            "tempUnits": "f",
            "theme": "orange",
            "lightingMode": "auto"
        },
        {
            "name": "Virtual Accessories Platform",
            "devices": [
                {
                    "accessoryID": "463737",
                    "accessoryName": "My Sensor Switch",
                    "accessoryType": "switch",
                    "switchDefaultState": "off",
                    "accessoryIsStateful": false,
                    "accessoryHasResetTimer": false,
                    "resetTimer": {
                        "duration": 5,
                        "units": "seconds"
                    },
                    "accessoryHasCompanionSensor": true,
                    "companionSensor": {
                        "name": "My Sensor",
                        "type": "contact"
                    }
                },
                {
                    "accessoryID": "4927541",
                    "accessoryName": "Triggered Sensor",
                    "accessoryType": "sensor",
                    "sensorType": "contact",
                    "sensorTrigger": "ping",
                    "pingTrigger": {
                        "host": "8.8.8.8",
                        "failureRetryCount": 3,
                        "isDisabled": true
                    }
                },
                {
                    "accessoryID": "3618884",
                    "accessoryName": "Cron Sensor",
                    "accessoryType": "sensor",
                    "sensorType": "contact",
                    "sensorTrigger": "cron",
                    "cronTrigger": {
                        "pattern": "* * * * *",
                        "zoneId": "Europe/London",
                        "startDateTime": "2024-11-18T11:23:00Z",
                        "endDateTime": "2025-11-19T00:24:00Z",
                        "isDisabled": true
                    }
                },
                {
                    "accessoryID": "6108020",
                    "accessoryName": "Test Lock",
                    "accessoryType": "lock",
                    "lockDefaultState": "locked",
                    "lockHardwareFinish": "silver"
                },
                {
                    "accessoryID": "4687169",
                    "accessoryName": "Stateful Switch",
                    "accessoryType": "switch",
                    "switchDefaultState": "on",
                    "accessoryIsStateful": true
                },
                {
                    "accessoryID": "9574149",
                    "accessoryName": "Reset Switch",
                    "accessoryType": "switch",
                    "switchDefaultState": "off",
                    "accessoryHasResetTimer": true,
                    "resetTimer": {
                        "duration": 5,
                        "units": "seconds"
                    }
                },
                {
                    "accessoryID": "3501936",
                    "accessoryName": "My Garage Door",
                    "accessoryType": "garagedoor",
                    "garageDoorDefaultState": "closed"
                },
                {
                    "accessoryID": "7105131",
                    "accessoryName": "Test Blinds",
                    "accessoryType": "windowcovering",
                    "windowCoveringDefaultState": "closed"
                }
            ],
            "platform": "VirtualAccessoriesForHomebridge"
        }
    ]
}
```


### Homebridge UI Version

5.0.0-beta.13

### Homebridge Version

1.8.5

### Node.js Version

22.9.0

### Operating System

macOS

### Environment Info

Using hb-service

### Raspberry Pi Model

None