Resize Node-RED instance without restarting

### Description

Today while reading the kubernetes docs for personal purposes I found out it’s possible if the node has enough resources to resize a pod: https://kubernetes.io/docs/tasks/configure-pod-container/resize-container-resources/

This is not a must have for FlowFuse, so I suggest not to pursue this until there’s customer demand.

tier: Enterprise

### Epic/Story

_No response_

### Have you provided an initial effort estimate for this issue?

I have not provided an initial effort estimate

Start with the Kubernetes pod resize documentation linked in the issue, then trace how FlowFuse deploys and manages a Node-RED instance. Clarify whether customer demand justifies the work and define what resizing without a restart would need to mean for the supported deployment path.

Written by the indexing model from the issue text.