fix: 修复 EventScrollList 和 EventDetailScrollPanel 布局问题

- EventScrollList.js: 添加 h="100%" 和 data-scroll-container 属性，支持独立滚动
- EventDetailScrollPanel.js: 移除 maxHeight 限制，允许详情面板撑满容器高度
- 修复布局显示问题，优化滚动体验

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/views/Community/components/DynamicNewsCard/EventDetailScrollPanel.js

@@ -26,7 +26,6 @@ const EventDetailScrollPanel = ({
       position="relative"
       sx={{
         height: '100%',
-        maxHeight: '1200px',
         overflowY: 'auto',
         overflowX: 'hidden',
         '&::-webkit-scrollbar': {