EnvFrom multiple refs should be separate

[burner1024]

Description of the bug:

const deploymentEnv = new kplus.EnvFrom(depConfigMap, undefined, depSecret);

Use it in deployment.containers.envFrom. Resulting yaml is

- envFrom:
    - configMapRef:
      name: cmName
      secretRef:
      name: secretName

That won't work:
Deployment.apps "dep" is invalid: spec.template.spec.containers[0].envFrom: Invalid value: "": may not have more than one field specified at a time

Expected output:

- envFrom:
    - configMapRef:
      name: cmName
    - secretRef:
      name: secretName

Reproduction Steps:

See above

Error Log:

Environment:

• Framework Version: cdk8s-plus-30
• OS:

Other:

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