[OTEL] Make sure we propagate baggage correctly

[AbhiPrasad]

Problem Statement

https://github.com/getsentry/sentry-javascript/blob/master/packages/opentelemetry-node/src/propagator.ts#L32-L50

We only propagate baggage when there is an active transaction, which doesn't follow the spec.

Solution Brainstorm

We need to propagate baggage, even if there is no transaction to reference.