Traces sampler also total transactions

Hello,

I have a custom OTEL based instrumentation which I was testing out with `ElasticNodeSDK`. I can see that with 1% sample rate, total spans and total transaction count metrics both are being sampled.
I'm expecting only traces to be sampled and not transaction count.

Any way to fix this?

Below were the config:
```
OTEL_TRACES_SAMPLER="traceidratio"
OTEL_TRACES_SAMPLER_ARG="0.01"
```

I'm using Elastic Observability Cloud for APM.