UInstancedActorsSubsystem::DoesActorClassHaveRegisteredSettings

Returns true if ActorClass has a matching [FInstancedActorsClassSettingsBase](API\Plugins\InstancedActors\FInstancedActorsClassSettingsBas-) entry in [UInstancedActorsProjectSettings::ActorClassSettingsRegistryType](API\Plugins\InstancedActors\UInstancedActorsProjectSettings\ActorClassSettin-) data registry.