Add static ports info under LB configuration

[sakshisharma84]

1. Add the following note before [Affinity section] (https://github.com/Mirantis/mke-docs/blob/main/content/docs/configuration/ingress/_index.md#affinity)

### Node ports handling during upgrade from MKE 3 to MKE 4

|MKE 3 NodePort Range | 	Ingress Controller in MKE 3 |	Ingress NodePorts in MKE 4                                                             |
|----------------------|-----------------------------|---------------------------------------------------------------------------------------------|
|Default              | 	Enabled                     |	Uses the same ports set by the user in MKE 3                                           |
|Default              |	Disabled	                    |   Default ports: HTTP: 33000, HTTPS: 33001                                               |
|Custom	              |  Enabled	                    |   Uses the same ports set by the user in MKE 3                                           |
|Custom	              |  Disabled	                    |   Reserves the first two static ports from the NodePort range for the ingress controller |


<callout> The static NodePort range is calculated based on the guidance from [Kubernetes blog on NodePort dynamic and static allocation](https://kubernetes.io/blog/2023/05/11/nodeport-dynamic-and-static-allocation/#how-can-you-avoid-nodeport-service-port-conflicts). </callout>

For instance, if the NodePort range is `30000-32767`, the NodePorts for the ingress controller will be `30000` and `30001`.

2. In Load balancer requirements section, modify the link Ingress Controller configuration to the section added in step (1) above.