refactor: move No LoRA feature from LoRA Pool to Lora Cycler widget

Move the 'empty/no LoRA' cycling functionality from the LoRA Pool node
to the Lora Cycler widget for cleaner architecture:

Frontend changes:
- Add include_no_lora field to CyclerConfig interface
- Add includeNoLora state and logic to useLoraCyclerState composable
- Add toggle UI in LoraCyclerSettingsView with special styling
- Show 'No LoRA' entry in LoraListModal when enabled
- Update LoraCyclerWidget to integrate new logic

Backend changes:
- lora_cycler.py reads include_no_lora from config
- Calculate effective_total_count (actual count + 1 when enabled)
- Return empty lora_stack when on No LoRA position
- Return actual LoRA count in total_count (not effective count)

Reverted files to pre-PR state:
- lora_loader.py, lora_pool.py, lora_randomizer.py, lora_stacker.py
- lora_routes.py, lora_service.py
- LoraPoolWidget.vue and related files

Related to PR #861

Co-authored-by: dogatech <dogatech@dogatech.home>

py/nodes/lora_stacker.py

@@ -38,8 +38,6 @@ class LoraStackerLM:
             stack.extend(lora_stack)
             # Get trigger words from existing stack entries
             for lora_path, _, _ in lora_stack:
-                if lora_path == "None" or not lora_path:
-                    continue
                 lora_name = extract_lora_name(lora_path)
                 _, trigger_words = get_lora_info(lora_name)
                 all_trigger_words.extend(trigger_words)
@@ -47,7 +45,7 @@ class LoraStackerLM:
         # Process loras from kwargs with support for both old and new formats
         loras_list = get_loras_list(kwargs)
         for lora in loras_list:
-            if not lora.get('active', False) or lora.get('name') == "None":
+            if not lora.get('active', False):
                 continue
                 
             lora_name = lora['name']