♻️ refactor(web): migrate React modules from .js to .jsx and align entrypoint

- Rename React components/pages/utilities that contain JSX to `.jsx` across `web/src`
- Update import paths and re-exports to match new `.jsx` extensions
- Fix Vite entry by switching `web/index.html` from `/src/index.js` to `/src/index.jsx`
- Verified remaining `.js` files are plain JS (hooks/helpers/constants) and do not require JSX
- No runtime behavior changes; extension and reference alignment only

Context: Resolves the Vite pre-transform error caused by the stale `/src/index.js` entry after migrating to `.jsx`.

web/src/components/table/task-logs/modals/ColumnSelectorModal.jsx

@@ -19,7 +19,7 @@ For commercial licensing, please contact support@quantumnous.com
 
 import React from 'react';
 import { Modal, Button, Checkbox } from '@douyinfe/semi-ui';
-import { getTaskLogsColumns } from '../TaskLogsColumnDefs.js';
+import { getTaskLogsColumns } from '../TaskLogsColumnDefs';
 
 const ColumnSelectorModal = ({
   showColumnSelector,