fix(operators): honor nodeSelector/tolerations/affinity values

[shimpa1]

Problem

The akash-hostname-operator and akash-inventory-operator charts declare nodeSelector / tolerations / affinity values but the templates/deployment.yaml in both charts never references those values, so they are silently ignored.

This prevents operators from scheduling on clusters where every non-control-plane node is tainted (for example a single ingress-only worker tainted akash.network/role=ingress:NoSchedule) — there is no way to make Helm emit a toleration onto the pod spec.

Fix

Adds the standard with / toYaml blocks at the bottom of spec.template.spec in both Deployment templates, matching the pattern already used in akash-provider/templates/statefulset.yaml:346-357:

      {{- with .Values.nodeSelector }}
      nodeSelector:
        {{- toYaml . | nindent 8 }}
      {{- end }}
      {{- with .Values.affinity }}
      affinity:
        {{- toYaml . | nindent 8 }}
      {{- end }}
      {{- with .Values.tolerations }}
      tolerations:
        {{- toYaml . | nindent 8 }}
      {{- end }}

Also adds the three keys to akash-inventory-operator/values.yaml, which were previously missing entirely (only akash-hostname-operator/values.yaml had them declared).

Backward compatibility

Empty values render no blocks — existing users see no behavior change. Verified with helm template against both charts with and without overrides, and helm lint passes on both.