### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

Currently, when passing `$$.Execution.StartTime` as a parameter to a SFN lambda, it is coming in in the format `HH:MM:SS.###`.

### Expected Behavior

`$$.Execution.StartTime` should be an ISO 8601 datetime string.

### How are you starting LocalStack?

With a docker-compose file

### Steps To Reproduce

This is run in a docker compose file.

Step function definition is

```json
{
  "Comment": "Sample SFN",
  "StartAt": "SampleLambda",
  "States": {    
    "SampleLambda": {
      "Type": "Task",
      "Resource": "arn:aws:states:::lambda:invoke",
      "End": true,
      "Parameters": {
        "FunctionName": "Sample-Function",
        "Payload": {
          "data": {
            "startDateTime.$": "$$.Execution.StartTime"
          }
        }
      }
    }
  }
}
```

### Environment

```markdown
- OS: Mac OS Ventura 13.6.1
- LocalStack:
LocalStack version: 3.0.1.dev
LocalStack build date: 2023-11-20
LocalStack build git hash: 3e32b438
```


### Anything else?

Thank you so much for your hard work.
self,
        create_iam_role_for_sfn,
        create_state_machine,
        sfn_events_to_sqs_queue,
        aws_client,
        sfn_snapshot,
    ):
        template = BaseTemplate.load_sfn_template(BaseTemplate.WAIT_AND_FAIL)
        template["States"]["State_1"]["Seconds"] = 60 if is_aws_cloud() else 1
        definition = json.dumps(template)
        exec_input = json.dumps({})
        create_and_record_events(
            create_iam_role_for_sfn,
            create_state_machine,
            sfn_events_to_sqs_queue,
            aws_client,
            sfn_snapshot,
            definition,
            exec_input,
        )
    @markers.aws.validated
    def test_query_context_object_values(
        self,
        create_iam_role_for_sfn,
        create_state_machine,
        aws_client,
        sfn_snapshot,
    ):
        sfn_snapshot.add_transformer(
            JsonpathTransformer(