fix(tracer): preserve keep/drop possibility for OTel bridge on unsampled spans#4631

gh-worker-dd-mergequeue-cf854d[bot] merged 6 commits intomainDataDog/dd-trace-go:mainfrom

ben.db/fix-otel-bridge-unsampled-span-dropDataDog/dd-trace-go:ben.db/fix-otel-bridge-unsampled-span-dropCopy head branch name to clipboard