chore(llmobs/experiments): disable tracing when tracing not explicitl… (#14111)

…y enabled

When tracing isn't explicitly enabled then disable it to avoid noisy
logs since APM doesn't support agentless.

Author: Kyle-Verhoog

ddtrace/llmobs/_llmobs.py

@@ -516,6 +516,10 @@ def enable(
         config._llmobs_ml_app = ml_app or config._llmobs_ml_app
         config._llmobs_instrumented_proxy_urls = instrumented_proxy_urls or config._llmobs_instrumented_proxy_urls
 
+        # FIXME: workaround to prevent noisy logs when using the experiments feature
+        if config._dd_api_key and cls._app_key and os.environ.get("DD_TRACE_ENABLED", "").lower() not in ["true", "1"]:
+            ddtrace.tracer.enabled = False
+
         error = None
         start_ns = time.time_ns()
         try: