## Description

The official litellm-database Docker images include the core OpenTelemetry SDK packages but are missing the opentelemetry-instrumentation package. This means OTEL metrics and logs export does not work, even when configured according to the [SigNoz integration docs](https://docs.litellm.ai/docs/observability/signoz).

## What's installed

``` opentelemetry-api 1.28.0 opentelemetry-exporter-otlp 1.28.0 opentelemetry-exporter-otlp-proto-common 1.28.0 opentelemetry-exporter-otlp-proto-grpc 1.28.0 opentelemetry-exporter-otlp-proto-http 1.28.0 opentelemetry-proto 1.28.0 opentelemetry-sdk 1.28.0 opentelemetry-semantic-conventions 0.49b0 ```

## What's missing

``` opentelemetry-instrumentation opentelemetry-instrumentation-logging opentelemetry-instrumentation-system-metrics ```

## Impact

- **Traces**: Work fine via callbacks: ["otel"] - **Metrics**: No metrics are exported despite OTEL_METRICS_EXPORTER="otlp" being set - **Logs**: OTEL_PYTHON_LOGGING_AUTO_INSTRUMENTATION_ENABLED=true has no effect without the instrumentation package

## Steps to reproduce

1. Deploy LiteLLM proxy w…