Refactor LoraModal and RecipeSearchManager for improved functionality and performance

- Updated LoraModal to enhance lazy loading and scroll behavior, utilizing MutationObserver for dynamic content changes and adding a new helper function for the back-to-top button.
- Modified RecipeSearchManager to ensure proper recipe loading through the window.recipeManager object, improving reliability in recipe reloading.
- Added additional components to loras.html for better modularity and organization of the modal structure.

templates/loras.html

@@ -11,6 +11,10 @@
 {% block init_message %}Scanning and building LoRA cache. This may take a few minutes...{% endblock %}
 {% block init_check_url %}/api/loras?page=1&page_size=1{% endblock %}
 
+{% block additional_components %}
+{% include 'components/lora_modals.html' %}
+{% endblock %}
+
 {% block content %}
     {% include 'components/controls.html' %}
     <!-- Lora卡片容器 -->