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>

vue-widgets/src/components/lora-pool/LoraPoolSummaryView.vue

@@ -27,10 +27,8 @@
       <LicenseSection
         :no-credit-required="noCreditRequired"
         :allow-selling="allowSelling"
-        :include-empty-lora="includeEmptyLora"
         @update:no-credit-required="$emit('update:noCreditRequired', $event)"
         @update:allow-selling="$emit('update:allowSelling', $event)"
-        @update:include-empty-lora="$emit('update:includeEmptyLora', $event)"
       />
     </div>
 
@@ -63,10 +61,9 @@ defineProps<{
   // Folders
   includeFolders: string[]
   excludeFolders: string[]
-  // License & Misc
+  // License
   noCreditRequired: boolean
   allowSelling: boolean
-  includeEmptyLora: boolean
   // Preview
   previewItems: LoraItem[]
   matchCount: number
@@ -79,7 +76,6 @@ defineEmits<{
   'update:excludeFolders': [value: string[]]
   'update:noCreditRequired': [value: boolean]
   'update:allowSelling': [value: boolean]
-  'update:includeEmptyLora': [value: boolean]
   refresh: []
 }>()
 </script>