Rename ErrorPage route module to PascalCase.

Align `src/` root components with naming conventions tracked in #1492.

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: dcblundell

src/error-page.tsx src/ErrorPage.tsxsrc/error-page.tsx renamed to src/ErrorPage.tsx

@@ -10,7 +10,7 @@ import { FocusStyleManager, OverlaysProvider } from '@blueprintjs/core';
 import './index.scss';
 import { HelmetProvider } from 'react-helmet-async';
 import { RouterProvider } from 'react-router';
-import ErrorPage from './error-page';
+import ErrorPage from './ErrorPage';
 import Layout from './components/Layout';
 import getServerConfig from './functions/getServerConfig';
 import { SocketProvider } from './libs/SocketProvider';