ci: simplify integration test job labels and worker config

Co-Authored-By: GPT-6 <codex@openai.com>

Author: nicohrubec

.github/workflows/build.yml

@@ -783,7 +783,7 @@ jobs:
   job_node_integration_tests:
     name:
       Node (${{ matrix.node }})${{ (matrix.typescript && format(' (TS {0})', matrix.typescript)) || '' }} Integration
-      Tests (shard ${{ matrix.shard }}/3)
+      Tests (${{ matrix.shard }}/3)
     needs: [job_get_metadata, job_build]
     if: needs.job_build.outputs.changed_node_integration == 'true' || github.event_name != 'pull_request'
     runs-on: ubuntu-24.04

dev-packages/browser-integration-tests/playwright.browser.config.ts

@@ -3,7 +3,7 @@ import CorePlaywrightConfig from './playwright.config';
 
 const config: PlaywrightTestConfig = {
   ...CorePlaywrightConfig,
-  workers: process.env.CI ? 6 : CorePlaywrightConfig.workers,
+  workers: process.env.CI ? 6 : undefined,
   testDir: './suites',
 };