fix(te): apply sd_text_encoder changes for non-T5 encoders

reload_text_encoder only hot-swapped T5-family encoders and ran only at initial
load, so changing sd_text_encoder for a model with a generic encoder (Krea2's
Qwen3-VL) never took effect until a full model reload. Track the loaded
selection and, for encoders with no in-place swap, reload the model on change,
triggered from the settings handler. The fresh model object also invalidates
the prompt cache.

modules/ui_settings.py

@@ -200,6 +200,8 @@ def run_settings_single(value, key, progress=False, force=False):
         from modules.dml import directml_override_opts
         directml_override_opts()
     shared.opts.save(silent=True)
+    if key == 'sd_text_encoder':
+        sd_models.reload_text_encoder() # apply the change now; reloads the model for encoders with no in-place swap
     if key not in ['sd_model_checkpoint', 'sd_model_refiner', 'sd_vae', 'sd_te', 'sd_unet'] or force:
         log.debug(f'Setting changed: {key}="{value}" progress={progress} force={force}')
     return get_value_for_setting(key), shared.opts.dumpjson()