argo-workflows: PodSpecPatch cannot patch `env` variables

Checklist

• Double-checked my configuration.
• Tested using the latest version.
• Used the Emissary executor.

Summary

What happened/what you expected to happen?

PodSpecPatch should work for env vars. I want all my pods to be configured the same way, but this doesn’t work so I have to resort to copying the env block into each template.

What version are you running?

Diagnostics

apiVersion: argoproj.io/v1alpha1
kind: WorkflowTemplate
metadata:
  name: my-template
  generateName: my-template-
spec:  
  podSpecPatch: |
    containers:
      - name: main
        env:
          - name: FOO
            valueFrom:
              configMapKeyRef:
                name: "my-config"
                key: foo_key

Any pod inside this template will not have the env values set from the patch.

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