fix: error handlers in _download_custom_lora now return 2 values (markdown + dropdown)

All error paths (cache and non-cache) were returning only 1 value
but the function has 2 output components [markdown, dropdown].
Added gr.update() no-op for the dropdown on every error path.

app.py

@@ -1538,9 +1538,9 @@ def _download_custom_lora(url, scale=1.0, trigger="", description="", tags=""):
         try:
             key = _load_lora_from_cache(cache_path)
         except gr.Error as _e:
-            return gr.update(value=f"**❌ {_e}**", visible=True)
+            return gr.update(value=f"**❌ {_e}**", visible=True), gr.update()
         except Exception as _e:
-            return gr.update(value=f"**❌ Unexpected error loading cached LoRA: {_e}**", visible=True)
+            return gr.update(value=f"**❌ Unexpected error loading cached LoRA: {_e}**", visible=True), gr.update()
         n = len(_CUSTOM_LoRA[key])
         fname = os.path.basename(cache_path)
         note = f" (scale {scale:g}" + (f", trigger `{trigger}`)" if trigger else ")")
@@ -1556,9 +1556,9 @@ def _download_custom_lora(url, scale=1.0, trigger="", description="", tags=""):
             file = _resolve_repo_file(repo)
         _ensure_custom_lora_loaded(repo, file)
     except gr.Error as _e:
-        return gr.update(value=f"**❌ {_e}**", visible=True)
+        return gr.update(value=f"**❌ {_e}**", visible=True), gr.update()
     except Exception as _e:
-        return gr.update(value=f"**❌ Unexpected error loading the LoRA: {_e}**", visible=True)
+        return gr.update(value=f"**❌ Unexpected error loading the LoRA: {_e}**", visible=True), gr.update()
     n = len(_CUSTOM_LoRA[(repo, file)])
     note = f" (scale {scale:g}" + (f", trigger `{trigger}`)" if trigger else ")")
     # Auto-register in the community registry so others can find it.