### 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
region = LambdaRegion.get()
    function_name = data.get("FunctionName") or ""
    enabled = data.get("Enabled", True)
    for mapping in region.event_source_mappings:
        if uuid_value == mapping["UUID"]:
            if function_name:
                mapping["FunctionArn"] = func_arn(function_name)
            batch_size = data.get("BatchSize")
            if "SelfManagedEventSource" in mapping:
                batch_size = check_batch_size_range(
                    mapping["SourceAccessConfigurations"][0]["URI"],
                    batch_size or mapping["BatchSize"],
                )
            else:
                batch_size = check_batch_size_range(
                    mapping["EventSourceArn"], batch_size or mapping["BatchSize"]
                )
            mapping["State"] = "Enabled" if enabled in [True, None] else "Disabled"
            mapping["LastModified"] = format_timestamp_for_event_source_mapping()
            mapping["BatchSize"] = batch_size
            if "SourceAccessConfigurations" in (mapping and data):
                mapping["SourceAccessConfigurations"] = data["SourceAccessConfigurations"]
            return mapping
    return {}
def delete_event_source(uuid_value):