model_runner simplify

[hnyls2002]

dispatch different forward modes' argument only inside the function, remove the **kwargs for better simplicity.

sglang/python/sglang/srt/managers/router/model_runner.py

Lines 444 to 454 in dfb4313

	def forward(self, batch: Batch, forward_mode: ForwardMode):
	if self.is_multimodal_model and forward_mode == ForwardMode.EXTEND:
	return self.forward_extend_multi_modal(batch)
	elif forward_mode == ForwardMode.DECODE:
	return self.forward_decode(batch)
	elif forward_mode == ForwardMode.EXTEND:
	return self.forward_extend(batch)
	elif forward_mode == ForwardMode.PREFILL:
	return self.forward_prefill(batch)
	else:
	raise ValueError(f"Invaid forward mode: {forward_mode}")