Set logging level for comfy package to WARN

[pschroedl]

Excessive 'INFO' logging may be slowing down pipelines.

This sets the log level to WARNING for the comfy package in the pipeline process and removes logs such as:

timestamp=2025-03-07 21:30:14 level=INFO location=model_management.py:629:_load_models_gpu gateway_request_id=8d6efc9d stream_id= message=Loaded <LoadedModel <ModelPatcher for BaseModel (model_dtype=torch.float16 device=cuda:0 size=7.8 KiB operations=disable_weight_init)>>

Attempts to use config arguments to ComfystreamClient did not produce the same results:
runner/app/live/pipelines/comfyui.py:270

        self.client = ComfyStreamClient(cwd=comfy_ui_workspace, verbose='WARNING', logging_level='WARNING')

had no effect.