Use normalizePath for Windows file URL tests

Instead of accepting both backslashes and forward slashes with regex,
properly normalize paths using normalizePath() helper to ensure
consistent forward slash output.

Author: jdalton

test/path.test.ts

@@ -520,11 +520,11 @@ describe('path utilities', () => {
 
       it('should handle Windows file URLs', () => {
         if (process.platform === 'win32') {
-          expect(pathLikeToString(new URL('file:///C:/Windows'))).toMatch(
-            /^C:[\\/]/,
+          expect(normalizePath(pathLikeToString(new URL('file:///C:/Windows')))).toMatch(
+            /^C:\//,
           )
-          expect(pathLikeToString(new URL('file:///D:/data/file.txt'))).toMatch(
-            /^D:[\\/]/,
+          expect(normalizePath(pathLikeToString(new URL('file:///D:/data/file.txt')))).toMatch(
+            /^D:\//,
           )
         }
       })