test: align playwright runtime with chromium

Co-Authored-By: Codex <noreply@anthropic.com>

web/playwright.config.ts

@@ -4,7 +4,7 @@ import { cnBaseURL, playwrightArtifactRoot } from './e2e/fixtures/cluster';
 
 export default defineConfig({
   testDir: './e2e',
-  testMatch: '**/*.spec.ts',
+  testMatch: ['**/*.spec.ts', '**/*.spec.js'],
   fullyParallel: false,
   workers: 1,
   timeout: 60_000,
@@ -26,7 +26,6 @@ export default defineConfig({
   globalTeardown: './e2e/global-teardown.ts',
   use: {
     baseURL: cnBaseURL,
-    channel: 'msedge',
     headless: true,
     screenshot: 'only-on-failure',
     trace: 'retain-on-failure',