fix(@angular/build): ensure matching coverage excludes with karma on Windows

Author: clydin

.github/workflows/pr.yml

@@ -141,7 +141,7 @@ jobs:
       - name: Setup Bazel RBE
         uses: angular/dev-infra/github-actions/bazel/configure-remote@836bdd0543d15904c469f5a0ce869d30a8029971
       - name: Run CLI E2E tests
-        run: yarn bazel test --config=e2e //tests/legacy-cli:e2e_node22 --test_filter="tests/basic/{build,rebuild}.ts" --test_arg="--esbuild"
+        run: yarn bazel test --config=e2e //tests/legacy-cli:e2e_node22 --test_filter="tests/basic/{build,rebuild}.ts,tests/test/test-code-coverage-exclude.ts" --test_arg="--esbuild"
 
   e2e-package-managers:
     needs: build

packages/angular/build/src/builders/karma/application_builder.ts

@@ -614,7 +614,7 @@ function getInstrumentationExcludedPaths(root: string, excludedPaths: string[]):
 
   for (const excludeGlob of excludedPaths) {
     const excludePath = excludeGlob[0] === '/' ? excludeGlob.slice(1) : excludeGlob;
-    globSync(excludePath, { absolute: true, cwd: root }).forEach((p) => excluded.add(p));
+    globSync(excludePath, { cwd: root }).forEach((p) => excluded.add(path.join(root, p)));
   }
 
   return excluded;