message: AgcManagerDirect: Add logging of startup_min_volume
  Cr-Commit-Position: refs/heads/main@{#37954}
diff: @@ -483,6 +483,8 @@ AgcManagerDirect::AgcManagerDirect(int num_capture_channels,
  << " (overridden: "
  << (min_mic_level_override_.has_value() ? "yes" : "no")
  << ")";
  + RTC_LOG(LS_INFO) << "[agc] Startup min volume: "
  + << analog_config.startup_min_volume;
  for (size_t ch = 0; ch < channel_agcs_.size(); ++ch) {
  ApmDataDumper* data_dumper_ch = ch == 0 ? data_dumper_.get() : nullptr;
  