🐛(frontend) fix 404 page when reload 403 page

When users were reloading a 403 page, they were
redirected to the 404 page because of Nextjs
routing mechanism. This commit fixes this issue by
removing the 403 page from the pages directory
and creating a component that is used directly
in the layout when a 403 error is detected.

src/frontend/apps/e2e/__tests__/app-impress/utils-common.ts

@@ -1,6 +1,7 @@
 import { Page, expect } from '@playwright/test';
 
-export const BROWSERS = ['chromium', 'webkit', 'firefox'];
+export type BrowserName = 'chromium' | 'firefox' | 'webkit';
+export const BROWSERS: BrowserName[] = ['chromium', 'webkit', 'firefox'];
 
 export const CONFIG = {
   AI_FEATURE_ENABLED: true,