fix(operator): correctly mount webhook certificate secret in community release

[Mayank85Y]

What this PR does / why we need it:
Webhook certificate end up mounting up and failing due to incorrect webhook secret name "loki-operator-controller-manager-service-cert". After deploying Loki operator it gets stuck in container creating because secret with specified name is never created.
It need to be changed to "loki-operator-webhook-server-cert" from "loki-operator-controller-manager-service-cert" so that container don't get stuck.

Which issue(s) this PR fixes:
Fixes #19245

Checklist

• Reviewed the CONTRIBUTING.md guide (required)
• Documentation added
• Tests updated
• Title matches the required conventional commits format, see here
  • Note that Promtail is considered to be feature complete, and future development for logs collection will be in Grafana Alloy. As such, feat PRs are unlikely to be accepted unless a case can be made for the feature actually being a bug fix to existing behavior.
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[CLAassistant]

All committers have signed the CLA.

[JoaoBraveCoding]

Could we remove this file

[Mayank85Y]

I’ve removed the requested file. Please review and let me know if any further changes are needed.