[Feature] Support for ProvisioningRequest API

**Is your feature request related to a problem? Please describe.**
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We're using Kueue + Flyte for ML workloads and want to leverage ProvisioningRequest for atomic provisioning and capacity checks (supported in upstream cluster-autoscaler v1.29+).

Testing on our AKS cluster (K8s v1.33.3) show that ProvisioningRequest supported is not enabled in the cluster-autoscaler. Is there something we can do to enable it? If not, is it on the roadmap?

**Describe the solution you'd like**
The ProvisioningRequest CRD is already supported in K8s cluster-autoscaler, but it doesn't seem to be supported in AKS. It needs to be [enabled with a flag](https://github.com/kubernetes/autoscaler/blob/master/cluster-autoscaler/FAQ.md#how-can-i-use-provisioningrequest-to-run-batch-workloads), but I' not sure if that is as simple in AKS.

**Describe alternatives you've considered**
N/A

**Additional context**
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