### Is there an existing issue for this?

- [X] I have searched the existing issues

### Feature description

Basically we want to only run the lambda when an insert is occurring in DynamoDB.
I tested using Dynobase deleting a record and the lambda still triggered.

```
resource "aws_lambda_event_source_mapping" "event-log" {
	event_source_arn  = aws_dynamodb_table.event-log.stream_arn
	function_name     = module.main.lambda-arn
	starting_position = "LATEST"
	enabled = true # change to false when truncating the table in localstack
	maximum_retry_attempts = 1 # limit retry on failure to 1 for now

	# https://dev.to/aws-builders/filtering-dynamodb-streams-before-lambda-p5p
	filter_criteria { # Doesn't seem to work on LocalStack for now
		filter {
			pattern = jsonencode({
				body = {
					eventName : ["INSERT"]
				}
			})
		}
	}
}
```


### 🧑‍💻 Implementation

_No response_

### Anything else?

 https://dev.to/aws-builders/filtering-dynamodb-streams-before-lambda-p5p
def wait_for_table_active(table_name: str):
        def wait():
            return (
                dynamodb_client.describe_table(TableName=table_name)["Table"]["TableStatus"]
                == "ACTIVE"
            )
        poll_condition(wait, timeout=30)
    return wait_for_table_active
@pytest.fixture
def dynamodb_create_table_with_parameters(dynamodb_client, dynamodb_wait_for_table_active):
    tables = []
    def factory(**kwargs):
        if "TableName" not in kwargs:
            kwargs["TableName"] = f"test-table-{short_uid()}"
        tables.append(kwargs["TableName"])
        response = dynamodb_client.create_table(**kwargs)
        dynamodb_wait_for_table_active(kwargs["TableName"])
        return response
    yield factory
    
    for table in tables:
        try:
            
            dynamodb_wait_for_table_active(table)
            dynamodb_client.delete_table(TableName=table)
        except Exception as e:
            LOG.debug("error cleaning up table %s: %s", table, e)
@pytest.fixture
def dynamodb_create_table(dynamodb_client, dynamodb_wait_for_table_active):