fix(helm) - remove redundant ingester podAntiAffinity expression

[shlomitubul]

What this PR does / why we need it:
This PR removes the redundant "name" match expression from the pod anti-affinity rules for ingester pods. The current setup uses:

rollout-group In [ingester]

name NotIn [ingester-zone-]

The extra rule on the "name" label is unnecessary because the nodeSelector already ensures pods are scheduled in their correct zones, and the first rule already forces any ingester, regardless of its zone, to never be co-located on the same node. Adding the second rule with NotIn now actually causes all ingesters of a given zone to be scheduled on the same node.

Which issue(s) this PR fixes:

Special notes for your reviewer:

Checklist

• Reviewed the CONTRIBUTING.md guide (required)
• Documentation added
• Tests updated
• Title matches the required conventional commits format, see here
• [] Changes that require user attention or interaction to upgrade are documented in docs/sources/setup/upgrade/_index.md

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