OpenTelemetry metric error with minimal configuration

[spodugu]

Describe the bug

I am seeing below error with router version 2.6.0 and 2.8.2 and not seeing this with v1.x.

OpenTelemetry metric error occurred: Metrics exporter otlp failed with the grpc server returns error (The service is currently unavailable): , detailed error message: HTTP/2 was not negotiated.

To Reproduce

Steps to reproduce the behavior:

1. route.config.yaml

supergraph:
  listen: 0.0.0.0:8080

health_check:
  listen: 0.0.0.0:8088
  enabled: true

2. Environment variables

APOLLO_TELEMETRY_DISABLED=true

Expected behavior

No error should be logged since telemetry metrics are not configured.

Desktop (please complete the following information):

• OS: Ubuntu

• Version 24.04