✨ feat(tables): add "No Results" empty state for all table components

Add consistent empty state handling across all table components to improve
user experience when search/filter results are empty.

Changes:
- Import Empty component and IllustrationNoResult/IllustrationNoResultDark from @douyinfe/semi-ui
- Add empty prop to Table components with "搜索无结果" message
- Support both light and dark theme illustrations
- Apply internationalization support for empty state text

Affected files:
- web/src/components/table/MjLogsTable.js
- web/src/components/table/LogsTable.js
- web/src/components/table/ChannelsTable.js
- web/src/components/table/RedemptionsTable.js
- web/src/components/table/TaskLogsTable.js
- web/src/components/table/TokensTable.js
- web/src/components/table/UsersTable.js
- web/src/components/table/ModelPricing.js

This ensures consistent UX across all table components when no data
matches the current search or filter criteria.

web/src/i18n/locales/en.json

@@ -1567,5 +1567,6 @@
   "使用统计": "Usage Statistics",
   "资源消耗": "Resource Consumption",
   "性能指标": "Performance Indicators",
-  "模型数据分析": "Model Data Analysis"
+  "模型数据分析": "Model Data Analysis",
+  "搜索无结果": "No results found"
 }