aws-cdk: wafv2: add_override does not obey Action key

Describe the bug

Trying to add a rule to an specific key breaks as Action is not added:

waf_acl = wafv2.CfnWebACL(self, 'id', **params)
# Assuming above we would have only one rule
new_rule = {
    "Action": {
        "Block": {}
    },
    "Name": "Deny_regex",
    "Priority": 1,
    "Statement": {
        "RegexPatternSetReferenceStatement": {
            "Arn": {
                "Fn::ImportValue": "my-regex-arn"
            },
            "FieldToMatch": {
                "SingleHeader": {
                    "Name": "my-header"
                }
            },
            "TextTransformations": [
                {
                    "Priority": 0,
                    "Type": "NONE"
                }
            ]
        }
    },
    "VisibilityConfig": {
        "CloudWatchMetricsEnabled": True,
        "MetricName": "Deny_regex",
        "SampledRequestsEnabled": True
    }
}
waf_acl.add_override('Properties.Rules.1', new_rule)

At the final template, the Action block is not present:

{
    "Name": "Deny_regex",
    "Priority": 1,
    "Statement": {
        "RegexPatternSetReferenceStatement": {
            "Arn": {
                "Fn::ImportValue": "my-regex-arn"
            },
            "FieldToMatch": {
                "SingleHeader": {
                    "Name": "my-header"
                }
            },
            "TextTransformations": [
                {
                    "Priority": 0,
                    "Type": "NONE"
                }
            ]
        }
    },
    "VisibilityConfig": {
        "CloudWatchMetricsEnabled": true,
        "MetricName": "Deny_regex",
        "SampledRequestsEnabled": true
    }
}

Expected Behavior

Expected the rule json output to have the Action block

Current Behavior

Somehow, the Action json block is not being added to the final template

Reproduction Steps

Create a waf, and try to use add_override with a plain json rule on wafv2

Possible Solution

Add Action to the jsii interface mappings? Somehow Action is missing.

Additional Information/Context

No response

CDK CLI Version

2.127.0 (build 6c90efc)

Framework Version

No response

Node.js Version

v18.17.0

OS

MacOs

Language

Python

Language Version

Python 3.9.6

Other information

No response