Calls modules.sd_vae.refresh_vae_list(), fixes VAE list not updating

[EllangoK]

Closes #7553.

We should be calling the method to actually update the list. Just returning it does not update the list.
It is used here

stable-diffusion-webui/modules/shared.py

Line 399 in ea9bd9f

"sd_vae": OptionInfo("Automatic", "SD VAE", gr.Dropdown, lambda: {"choices": shared_items.sd_vae_items()}, refresh=shared_items.refresh_vae_list),

If we look at the other ones such as sd_model_checkpoint, it uses refresh_checkpoints, whose definition is also shown below

stable-diffusion-webui/modules/shared.py

Line 396 in ea9bd9f

"sd_model_checkpoint": OptionInfo(None, "Stable Diffusion checkpoint", gr.Dropdown, lambda: {"choices": list_checkpoint_tiles()}, refresh=refresh_checkpoints),

stable-diffusion-webui/modules/shared.py

Lines 295 to 297 in ea9bd9f

	def refresh_checkpoints():
	import modules.sd_models
	return modules.sd_models.list_models()