🔧 refactor(pricing-filters): extract display settings & improve mobile layout (#1365)

* **PricingDisplaySettings.jsx**
  • Extracted display settings (recharge price, currency, ratio toggle) from PricingSidebar
  • Maintains complete styling and functionality as standalone component

* **SelectableButtonGroup.jsx**
  • Added isMobile detection with conditional Col spans
  • Mobile: `span={12}` (2 buttons per row) for better touch experience
  • Desktop: preserved responsive grid `xs={24} sm={24} md={24} lg={12} xl={8}`

* **PricingSidebar.jsx**
  • Updated imports to use new PricingDisplaySettings component
  • Simplified component structure while preserving reset logic

These changes enhance code modularity and provide optimized mobile UX for filter button groups across the pricing interface.

web/src/i18n/locales/en.json

@@ -699,7 +699,6 @@
   "个": "indivual",
   "倍率是本站的计算方式，不同模型有着不同的倍率，并非官方价格的多少倍，请务必知晓。": "The magnification is the calculation method of this website. Different models have different magnifications, which are not multiples of the official price. Please be sure to know.",
   "所有各厂聊天模型请统一使用OpenAI方式请求，支持OpenAI官方库<br/>Claude()Claude官方格式请求": "Please use the OpenAI method to request all chat models from each factory, and support the OpenAI official library<br/>Claude()Claude official format request",
-  "复制选中模型": "Copy selected model",
   "分组说明": "Group description",
   "倍率是为了方便换算不同价格的模型": "The magnification is to facilitate the conversion of models with different prices.",
   "点击查看倍率说明": "Click to view the magnification description",