fix(workspace): ignore configs that are covered by the workspace

Author: sheremet-va

samples/monorepo-vitest-workspace/package.json

@@ -11,6 +11,6 @@
   "devDependencies": {
     "@vitest/coverage-v8": "^2.1.4",
     "happy-dom": "^15.7.4",
-    "vitest": "^2.1.4"
+    "vitest": "^3.0.5"
   }
 }

samples/monorepo-vitest-workspace/pnpm-lock.yaml

@@ -0,0 +1 @@
+throw new Error('should not be called')

samples/monorepo-vitest-workspace/test/vitest.config.ts

@@ -1 +1,14 @@
-export default {};
+import { defineConfig } from 'vitest/config'
+
+export default defineConfig({
+  test: {
+    workspace: [
+      'packages/*',
+      {
+        test: {
+          environment: 'happy-dom',
+        },
+      },
+    ]
+  }
+})