clean up the init interface of pt.dataloader

[wanghan-iapcm]

Summary

The initialization of a dataloader needs a dict named model_param .

deepmd-kit/deepmd/pt/utils/dataloader.py

Lines 60 to 67 in fa8e645

	def __init__(
	self,
	systems,
	batch_size,
	model_params,
	seed=10,
	shuffle=True,
	):

this is not a good design, we should explicitly write what information is necessary to init the dataloader. The doc str is also missing...

DeePMD-kit Version

v3.0.0.a0

TensorFlow Version

2.14.0

Python Version, CUDA Version, GCC Version, LAMMPS Version, etc

No response

Details

As described in summary.

[wanghan-iapcm]

fixed via #3434