[exporter/prometheus] Fix namespace build error logging when namespace is not configured#43034

songy23 merged 5 commits intoopen-telemetry:mainopen-telemetry/opentelemetry-collector-contrib:mainfrom

sentrysoftware:prometheus-fix-skip-namespace-build-when-config.Namespace-is-not-setsentrysoftware/opentelemetry-collector-contrib:prometheus-fix-skip-namespace-build-when-config.Namespace-is-not-setCopy head branch name to clipboard