Allows setting of preferred VAE and Text encoder(s) for checkpoints when selected via Checkpoint cards. No selection saved means no change to current toprow setting. 'Built in' option, if the only choice, means clear the toprow selection (therefore use vae/te built-in to checkpoint).
Also allows setting model type for checkpoints (SD1/SD2/SDXL/Flux/Unknown) (user set only, no attempt at autodetection), enabling filtering of the cards based on UI preset.
- the setting for preferring opts.sd_vae has been inverted and reworded
- resolve_vae function made easier to read and now returns an object rather than a tuple
- if the checkbox for overriding per-model preferences is checked, opts.sd_vae overrides checkpoint user metadata
- changing VAE in user metadata for currently loaded model immediately applies the selection
