Add documentation for ProvisioningRequestConfig retryStrategy

[PBundyra]

What would you like to be cleaned:
Add documentation for ProvisioningRequestConfig retryStrategy

Why is this needed:

[tenzen-y]

/kind documentation
/remove-kind cleanup

[tenzen-y]

@PBundyra Could we refine this troubleshooting guide state transition diagram as well?

https://kueue.sigs.k8s.io/docs/tasks/troubleshooting/troubleshooting_provreq/

[k8s-triage-robot]

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• After 90d of inactivity, lifecycle/stale is applied
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/lifecycle stale

[tenzen-y]

/remove-lifecycle stale