test(windows): cover portable credential stat errors

packages/credentials/credentials-local/tests/local.spec.ts

@@ -191,6 +191,13 @@ describe('layer ladder', () => {
       .rejects.toThrow(/ENOTDIR/)
   })
 
+  it('propagates a permission check rejected before the OS lookup', async () => {
+    const dir = await tempDir()
+    const ctx = new Context()
+    await expect(ctx.plugin(CredentialsLocal, { path: join(dir, '.credentials\0.yaml'), watch: false }))
+      .rejects.toMatchObject({ code: 'ERR_INVALID_ARG_VALUE' })
+  })
+
   it('propagates a read that fails for a reason other than absence', async () => {
     const dir = await tempDir()
     const path = join(dir, '.credentials.yaml')