♻️ 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/tokens/modals/EditTokenModal.jsx

@@ -28,7 +28,7 @@ import {
   getModelCategories,
   selectFilter,
 } from '../../../../helpers';
-import { useIsMobile } from '../../../../hooks/common/useIsMobile.js';
+import { useIsMobile } from '../../../../hooks/common/useIsMobile';
 import {
   Button,
   SideSheet,