AutoscalingGroup: cannot unset/ignore desiredCapacity

[aaronborden-rivianvw]

What happened?

Similar to #477, but for ASGs. We have an external controller managing the ASG desiredCapacity and the default desiredCapacity of 1 conflicts with this.

How can we reproduce it?

1. create an AutoscalingGroup with initProvider.desiredCapacity=0

apiVersion: autoscaling.aws.upbound.io/v1beta3
kind: AutoscalingGroup
spec:
  initProvider:
    desiredCapacity: 0

2. wait for crossplane to reconcile

Expected behavior

The AutoscalingGroup has desired capacity 0

Actual behavior

The AutoscalingGroup has desired capacity 1

What environment did it happen in?

Crossplane version: 1.18.1
Kubernetes: 1.30
Kubernetes distribution: AWS EKS