Support trigger detection for VPC Lattice

[jamesmbourne]

Expected Behavior

Lambdas invoked by a VPC Lattice service should include that information on the invoccations tab in the Servlerless view.

Example for a Function URL trigger:

Actual Behavior

No trigger is detected for VPC Lattice invocations

Steps to Reproduce the Problem

1. Create a Lambda with a VPC Lattice trigger
2. Invoke the Lambda
3. Observe that no trigger information is shown in Datadog

Specifications

• Datadog Lambda Layer version: 132
• Node version: 22

Stacktrace

N/A

Additional Context

The existing trigger extraction is in

datadog-lambda-js/src/trace/trigger.ts

Lines 63 to 65 in 940dacf

	function extractALBEventARN(event: ALBEvent) {
	return event.requestContext.elb.targetGroupArn;
	}

The format for the Lattice event is here: https://docs.aws.amazon.com/vpc-lattice/latest/ug/lambda-functions.html#receive-event-from-service

Ideally, serviceArn or targetGroupArn would be used to associate the VPC Lattice Service with the Lambda.

Also I suspect

datadog-lambda-js/src/trace/trigger.ts

Lines 31 to 37 in 940dacf

	function isHTTPTriggerEvent(eventSource: string | undefined) {
	return (
	eventSource === "api-gateway" ||
	eventSource === "application-load-balancer" ||
	eventSource === "lambda-function-url"
	);
	}

should be updated, as this would enable HTTP Status Code information to be extracted automatically.