fix: improve LoRA Randomizer toggle UX and semantic clarity

- Fix toggle UX consistency: both toggles now follow 'enabled → slider enabled' pattern
- Rename useSameClipStrength to useCustomClipRange for semantic clarity
- Update 'Respect Recommended Strength' label to 'Preset Strength Scale'
- Add explicit conversion logic in composable for backend compatibility
- Add visual disabled state for clip strength slider container

vue-widgets/src/components/LoraRandomizerWidget.vue

@@ -7,7 +7,7 @@
       :count-max="state.countMax.value"
       :model-strength-min="state.modelStrengthMin.value"
       :model-strength-max="state.modelStrengthMax.value"
-      :use-same-clip-strength="state.useSameClipStrength.value"
+      :use-custom-clip-range="state.useCustomClipRange.value"
       :clip-strength-min="state.clipStrengthMin.value"
       :clip-strength-max="state.clipStrengthMax.value"
       :roll-mode="state.rollMode.value"
@@ -25,7 +25,7 @@
       @update:count-max="state.countMax.value = $event"
       @update:model-strength-min="state.modelStrengthMin.value = $event"
       @update:model-strength-max="state.modelStrengthMax.value = $event"
-      @update:use-same-clip-strength="state.useSameClipStrength.value = $event"
+      @update:use-custom-clip-range="state.useCustomClipRange.value = $event"
       @update:clip-strength-min="state.clipStrengthMin.value = $event"
       @update:clip-strength-max="state.clipStrengthMax.value = $event"
       @update:roll-mode="state.rollMode.value = $event"