add missing import, simplify code, use patches module for #13276

from ldm.util import instantiate_from_config

from modules import paths, shared, modelloader, devices, script_callbacks, sd_vae, sd_disable_initialization, errors, hashes, sd_models_config, sd_unet, sd_models_xl, cache, extra_networks, processing, lowvram, sd_hijack

from modules import paths, shared, modelloader, devices, script_callbacks, sd_vae, sd_disable_initialization, errors, hashes, sd_models_config, sd_unet, sd_models_xl, cache, extra_networks, processing, lowvram, sd_hijack, patches

from modules.timer import Timer

import tomesd

import numpy as np

def setup_model():

    """called once at startup to do various one-time tasks related to SD models"""

    os.makedirs(model_path, exist_ok=True)

    enable_midas_autodownload()

def patch_given_betas():

    original_register_schedule = ldm.models.diffusion.ddpm.DDPM.register_schedule

    import ldm.models.diffusion.ddpm

    def patched_register_schedule(*args, **kwargs):

        if args[1] is not None and isinstance(args[1], ListConfig):

            modified_args = list(args)  # Convert args tuple to a list

            modified_args[1] = np.array(args[1])  # Modify the desired element

            args = tuple(modified_args)  # Convert the list back to a tuple

        """a modified version of register_schedule function that converts plain list from Omegaconf into numpy"""

        if isinstance(args[1], ListConfig):

            args = (args[0], np.array(args[1]), *args[2:])

        original_register_schedule(*args, **kwargs)

    ldm.models.diffusion.ddpm.DDPM.register_schedule = patched_register_schedule

    original_register_schedule = patches.patch(__name__, ldm.models.diffusion.ddpm.DDPM, 'register_schedule', patched_register_schedule)

def repair_config(sd_config):