Lambda component with IPC permissions in Greengrass V2

We have migrated a lambda from AWS Greengrass v1 to AWS Greengrass v2. This lambda needs to extract and decrypt a secret from Greengrass Core.

How can we authorize the component to perform IPC permissions to the lambda for that? Regular components recipes have the option ComponentConfiguration/DefaultConfiguration/accessControl. However when we build the component out of a lambda using AWS CLI create-component-version and option --lambda-function, there is no option to assign authorization policies.

One way we tried to make it work is by using a merge update in our deployment (as documented here).

    "accessControl": {
        "aws.greengrass.SecretManager": {
            "<my-component>:secrets:1": {
                "policyDescription": "Credentials for server running on edge.",
                "operations": [
                    "aws.greengrass#GetSecretValue"
                ],
                "resources": [
                    "arn:aws:secretsmanager:us-east-1:<account-id>:secret:xxxxxxxxxx"
                ]
            }
        }
    }

However the end recipe of the component (in the deployment) does not display the accessControl (AWS Greengrass Console), so we assume it has not been merge updated.

...
  "ComponentConfiguration": {
    "DefaultConfiguration": {
      "lambdaExecutionParameters": {
        "EnvironmentVariables": {
          "LOG_LEVEL": "DEBUG"
        }
      },
      "containerParams": {
        "memorySize": 16384,
        "mountROSysfs": false,
        "volumes": {},
        "devices": {}
      },
      "containerMode": "NoContainer",
      "timeoutInSeconds": 30,
      "maxInstancesCount": 10,
      "inputPayloadEncodingType": "json",
      "maxQueueSize": 200,
      "pinned": false,
      "maxIdleTimeInSeconds": 30,
      "statusTimeoutInSeconds": 30,
      "pubsubTopics": {
        "0": {
          "topic": "dt/app/+/status/update",
          "type": "PUB_SUB"
        }
      }
    }
  },

Any guidance here would be greatly appreciated! Thanks