fix(influxdb3-ent): apply container securityContext to all StatefulSets

[brophyja]

Fixes: #762

• Rebased/mergable
• Tests pass (see below)
• Sign CLA

Summary

Updates InfluxDB 3 Enterprise Helm chart to apply container-level securityContext configuration (e.g. ingester.securityContext: {}) to the StatefulSet template files where it was not implemented, including compactor-statefulset.yaml, ingester-statefulset.yaml, and querier-statefulset.yaml.

Testing

The changes in this pull request were successfully deployed against a Kubernetes cluster using a values.yaml with the following configuration:

...
ingester:
  securityContext:
    allowPrivilegeEscalation: false
    capabilities:
      drop:
        - ALL
...
querier:
  securityContext:
    allowPrivilegeEscalation: false
    capabilities:
      drop:
        - ALL
...
compactor:
  securityContext:
    allowPrivilegeEscalation: false
    capabilities:
      drop:
        - ALL
...

[alespour]

Thank you for this PR.