Add guidance to disable scheduler connection attempts in in high-scale environments

[MyMirelHub]

What content needs to be created or modified?

Documentation is missing guidance for the dapr.io/scheduler-host-address annotation. In environments with 100+ sidecar pods, all sidecars connecting to the scheduler by default causes resource exhaustion.

Describe the solution you'd like

Add documentation covering:

• Warning about default scheduler connection behavior at scale
• Usage of dapr.io/scheduler-host-address: "" for services not using Dapr Actors/Jobs
• Helm chart annotation examples

Where should the new material be placed?

• Primary: /operations/hosting/kubernetes/kubernetes-production/