[stable/sysdig] cannot set env unless ebpf enabled

[bcg62]

Describe the bug

env vars cannot be set unless ebpf.enabled = true

          {{- if .Values.ebpf.enabled }}
          env:
            - name: SYSDIG_BPF_PROBE
              value:
          {{- end }}
          {{- if .Values.proxy.httpProxy }}
            - name: http_proxy
              value: {{ .Values.proxy.httpProxy }}
          {{- end }}

Which chart:
stable/sysdig

What happened:

Values:

proxy:
  httpProxy: http://192.168.1.1:8080

Error: YAML parse error on sysdig/templates/daemonset.yaml: error converting YAML to JSON: yaml: line 40: did not find expected key

What you expected to happen:
Proper install

How to reproduce it (as minimally and precisely as possible):
Set proxy.httpProxy or daemonset.env with ebpf.enabled false