[service] implement a noop tracer provider

This is to address some of the memory concerns around the SDK's noop tracer provider. Instead of using the
published noop tracer provider, we implement our own to avoid the cost of context propagation, which has
been proven to be high enough to cause issues for end users.

Part of #10858

Signed-off-by: Alex Boten <223565+codeboten@users.noreply.github.com>

service/telemetry/tracer.go

@@ -13,6 +13,7 @@ import (
 	"go.opentelemetry.io/otel/propagation"
 	semconv "go.opentelemetry.io/otel/semconv/v1.26.0"
 	"go.opentelemetry.io/otel/trace"
+	"go.opentelemetry.io/otel/trace/embedded"
 	"go.opentelemetry.io/otel/trace/noop"
 
 	"go.opentelemetry.io/collector/config/configtelemetry"
@@ -47,10 +48,28 @@ func attributes(set Settings, cfg Config) map[string]interface{} {
 	return attrs
 }
 
+type noopNoContextTracer struct {
+	embedded.Tracer
+}
+
+var noopSpan = noop.Span{}
+
+func (n *noopNoContextTracer) Start(ctx context.Context, spanName string, opts ...trace.SpanStartOption) (context.Context, trace.Span) {
+	return ctx, noopSpan
+}
+
+type noopNoContextTracerProvider struct {
+	embedded.TracerProvider
+}
+
+func (n *noopNoContextTracerProvider) Tracer(name string, options ...trace.TracerOption) trace.Tracer {
+	return &noopNoContextTracer{}
+}
+
 // New creates a new Telemetry from Config.
 func newTracerProvider(ctx context.Context, set Settings, cfg Config) (trace.TracerProvider, error) {
 	if globalgates.NoopTracerProvider.IsEnabled() || cfg.Traces.Level == configtelemetry.LevelNone {
-		return noop.NewTracerProvider(), nil
+		return &noopNoContextTracerProvider{}, nil
 	}
 
 	sch := semconv.SchemaURL