Redis command_args end up in APM despite being disabled

[farnoy]

Current behaviour
Command arguments are submitted in the span, despite this setting being disabled.

Expected behaviour
I wanted to just see commands like GET, SET without arguments.

Steps to reproduce

1. Instrument Redis
2. Use Rails.cache
3. Observe cache keys as arguments to the GET command

Environment

• datadog version: 1.23 but this instrumentation hasn't changed through 2.8
• Configuration block (Datadog.configure ...):

c.tracing.instrument :redis,
                      describes: { url: redis_url },
                      service_name: "#{service_base_name}-redis"

• Ruby version: 3.3.6
• Operating system: linux x64
• Relevant library versions:

     ddtrace (1.23.3)
       datadog-ci (~> 0.8.1)
       debase-ruby_core_source (= 3.3.1)
       libdatadog (~> 7.0.0.1.0)
       libddwaf (~> 1.14.0.0.0)
       msgpack

[farnoy]

Oh and I did verify that it gets disabled properly:

        :command_args=>
          #<Datadog::Core::Configuration::Option:0x00007fb9804235d8
           @context=#<Datadog::Tracing::Contrib::Redis::Configuration::Settings:0x00007fb98a865fb0 ...>,
           @definition=
            #<Datadog::Core::Configuration::OptionDefinition:0x00007fb9948b9430
             @after_set=nil,
             @default=false,
             @default_proc=nil,
             @deprecated_env=nil,
             @env="DD_REDIS_COMMAND_ARGS",
             @env_parser=nil,
             @name=:command_args,
             @resetter=nil,
             @setter=
              #<Proc:0x00007fb993e7ab68 /app/vendor/bundle/ruby/3.3.0/gems/ddtrace-1.23.3/lib/datadog/core/configuration/opt
ion_definition.rb:10 (lambda)>,
             @type=:bool,
             @type_options={:nilable=>false}>,
           @is_set=true,
           @precedence_set=#<struct Datadog::Core::Configuration::Option::Precedence::Value numeric=
1, name=:programmatic>,
           @value=false,
           @value_per_precedence=
            {#<struct Datadog::Core::Configuration::Option::Precedence::Value numeric=1, name=
:programmatic>=>false}>,