<Niagara>Maximum buffer instance count for the GPU readback when in PerParticleMode

[yes_id]

	static int GGPUMaxReadbackCount = -1; //20240528 add count preparticle 1000
	static FAutoConsoleVariableRef CVarGPUMaxReadbackCount(
		TEXT("fx.Niagara.NDIExport.GPUMaxReadbackCount"),
		GGPUMaxReadbackCount,
		TEXT("Maximum buffer instance count for the GPU readback when in PerParticleMode, where <= 0 means ignore."),
		ECVF_Default
	);
}

.\Engine\Plugins\FX\Niagara\Source\Niagara\Private\NiagaraDataInterfaceExport.cpp
Why not add the parameter to the user interface？