mailmanager not returning all actions

[andrewduss-ledgerrun]

Describe the bug

As described in the aws cli reference for mailmanager get-rule-set, the output should include the rules.*.actions.*.write_to_s3.action_failure_policy, but it currently does not. This is causing downstream issues for the terraform provider signaling that there are changes when there are not.

Regression Issue

• Select this option if this issue appears to be a regression.

Expected Behavior

The aws mailmanager get-rule-set should return the ActionFailurePolicy with the response

Current Behavior

aws mailmanager get-rule-set responses do not include "WriteToS3": { ActionFailurePolicy: "CONTINUE" }

%aws mailmanager get-rule-set --rule-set-id [REDACTED]
{
    "RuleSetId": "[REDACTED]",
    "RuleSetArn": "[REDACTED]",
    "RuleSetName": "[REDACTED]",
    "CreatedDate": "2026-09-14T13:38:43-07:00",
    "LastModificationDate": "2026-09-14T17:00:05-07:00",
    "Rules": [
        {
            "Name": "[REDACTED]",

            [ ... SNIP ... ]
            
            "Actions": [
                {
                    "WriteToS3": {
                        "RoleArn": "[REDACTED]",
                        "S3Bucket": "[REDACTED]",
                        "S3Prefix": "[REDACTED]"
                    }
                },
                {
                    "SDK_UNKNOWN_MEMBER": {
                        "name": "InvokeLambda"
                    }
                }
            ]
        }
    ]
}

Reproduction Steps

# Create ruleset with S3 ActionFailurePolicy
aws mailmanager create-rule-set \
  --rule-set-name cli-test-action-failure-policy \
  --rules '[{
  "Name": "test-write-to-s3-afp",
  "Actions": [
    {
      "WriteToS3": {
        "RoleArn": "arn:aws:iam::1234567890:role/some-role",
        "S3Bucket": "my-s3-bucket",
        "S3Prefix": "my/prefix/",
        "ActionFailurePolicy": "DROP"
      }
    }
  ]
}]'


# Read back created ruleset
aws mailmanager get-rule-set --rule-set-id <RuleSetId>

Possible Solution

No response

Additional Information/Context

No response

CLI version used

aws-cli/2.33.13 Python/3.13.11 Darwin/25.6.0 exe/arm64

Environment details (OS name and version, etc.)

aws-cli/2.33.13 Python/3.13.11 Darwin/25.6.0 exe/arm64