chunksCache PDB is not user configurable despite a values value

[tico24]

Describe the bug
The values file contains:

chunksCache:
    # -- Pod Disruption Budget
    podDisruptionBudget:
      maxUnavailable: 1

https://github.com/grafana/loki/blob/main/production/helm/loki/values.yaml#L3015

The PDB template has maxUnavailable hard coded to 1, so it doesn't matter what you change this value to.
https://github.com/grafana/loki/blob/main/production/helm/loki/templates/chunks-cache/poddisruptionbudget-chunks-cache.yaml#L15

To Reproduce
Steps to reproduce the behavior:

1. Change chunksCache.podDisruptionBudget.maxUnavailable to 100
2. See that the resulting PDB doesn't change

Expected behavior
I expect to be able to control the values within the templates by completing the values in values.yaml

Environment:

• Infrastructure: [e.g., Kubernetes, bare-metal, laptop] k8s
• Deployment tool: [e.g., helm, jsonnet] helm

Screenshots, Promtail config, or terminal output
If applicable, add any output to help explain your problem.