APIGW proxy spans missing URL field when upgrading layer to v125

We recently upgraded our extension from v63 to v78. Since the update, our Lambda functions invoked through APIGW are still sending spans, but the url tags are coming through empty. All the other tags seem to be showing up as expected.

export class DatadogConstruct extends Construct {
  constructor(scope: Construct, id: string, props: DatadogConstructProps) {
    super(scope, id);

    const datadog = new DatadogLambda(this, 'DatadogLambda', {
      nodeLayerVersion: 125, // upgraded from 115 to 125
      extensionLayerVersion: 78, // upgraded from 63 to 78
      apiKeySecret: secret,
    });

    datadog.addLambdaFunctions([props.handler]);

    props.handler.addEnvironment('DD_ENV', env);
    props.handler.addEnvironment('DD_SERVICE', props.appName);
    props.handler.addEnvironment('DD_TRACE_INFERRED_PROXY_SERVICES_ENABLED', 'true');
    props.handler.addEnvironment('DD_TRACE_OTEL_ENABLED', 'false');
    props.handler.addEnvironment('DD_PROFILING_ENABLED', 'false');
    props.handler.addEnvironment('DD_SERVERLESS_APPSEC_ENABLED', 'false');
  }
}