fix(@angular/build): normalize unit test include/exclude globs to POSIX paths

The  `include` and `exclude` options for the unit test builder are passed to the test runner. Some test runners expect glob patterns with POSIX-style forward slashes (`/`) even on Windows.

This change ensures that the provided paths are always converted to POSIX format before being used, preventing issues when running tests on Windows with backslash-separated paths.

Author: alan-agius4

packages/angular/build/src/builders/unit-test/options.ts

@@ -10,6 +10,7 @@ import { type BuilderContext, targetFromTargetString } from '@angular-devkit/arc
 import { constants, promises as fs } from 'node:fs';
 import path from 'node:path';
 import { normalizeCacheOptions } from '../../utils/normalize-cache';
+import { toPosixPath } from '../../utils/path';
 import { getProjectRootPaths } from '../../utils/project-metadata';
 import { isTTY } from '../../utils/tty';
 import type { Schema as UnitTestBuilderOptions } from './schema';
@@ -92,8 +93,8 @@ export async function normalizeOptions(
     cacheOptions,
     // Target/configuration specified options
     buildTarget,
-    include: options.include ?? ['**/*.spec.ts'],
-    exclude: options.exclude,
+    include: options.include?.map(toPosixPath) ?? ['**/*.spec.ts'],
+    exclude: options.exclude?.map(toPosixPath),
     filter,
     runnerName: runner ?? 'vitest',
     coverage: {