Forge app doesn't start on IPv6 only cluster

### Current Behavior

The forge app binds to `0.0.0.0` by default so doesn't answer the startup or readiness probes on install.

(will probably need to fix the file server as well)

### Expected Behavior

forge app should bind to `::` if IPv6 only

need to check if binding to `::` will work on a IPv4 only network

### Steps To Reproduce

Build IPv6 only cluster and try and install helm chart

### Environment

- FlowFuse version: 2.16.0
- Node.js version:
- npm version:
- Platform/OS:
- Browser:

### Linked Customers

- Customer name and/or link to HubSpot contact