USERVER_NO_LOG_SPANS does not prevent logging spans

[TertiumOrganum1]

Even though it is specified in static config:

        dynamic-config:
            defaults:
                USERVER_NO_LOG_SPANS:
                    names: ["connection_pool_monitor"]  <<< ( I tried several combinations - names only, prefixes, with quotes and without)
                    prefixes: ["connection"]

I see logs (and spans):

timestamp:2024-04-18T19:59:34.932391    level:INFO      module:LogOpenTracing ( userver/core/src/tracing/span_opentracing.cpp:90 )      task_id:617000012300    thread_id:0x00007FFE7C24B400    text:   service_name:cpp_router trace_id:6bef261775d7490ab0baff6d443ee93b       parent_id:      span_id:eaefdb2011997686        start_time:1713459574932355     start_time_millis:1713459574932 duration:38     operation_name:connection_pool_monitor  tags:[]
 
tskv    timestamp=2024-04-18T19:59:34.932366    level=INFO      module=DoStep ( userver/core/src/utils/periodic_task.cpp:162 )  task_id=617000012300    thread_id=0x00007FFE7C24B400    text=   trace_id=6bef261775d7490ab0baff6d443ee93b       span_id=eaefdb2011997686        parent_id=      stopwatch_name=connection_pool_monitor  total_time=0.024937     span_ref_type=child     stopwatch_units=ms      start_timestamp=1713459574.932355       link=54e8ac3dd4364cfe976dcd6b910cbe74

These logs exist if components::RabbitMQ is added to components with default config:

      my-rabbit:
           secdist_alias: my-rabbit-alias
           min_pool_size: 5
           max_pool_size: 10
           max_in_flight_requests: 5
           use_secure_connection: false