fix(vercel): make Astro.cookies work again #22015

Job	Run time
Build: ubuntu-latest	1m 6s
Build: windows-latest	1m 4s
Lint	1m 53s
Test (Smoke): ubuntu-latest (node@18)	5m 3s
Test (E2E): ubuntu-latest (node@18.17.1)	7m 3s
Test: ubuntu-latest (node@18)	8m 17s
Test (Smoke): windows-latest (node@18)	8m 6s
Test (E2E): windows-latest (node@18.17.1)	9m 5s
Test: ubuntu-latest (node@20.5.1)	8m 32s
Test: macos-latest (node@18)	12m 22s
Test: windows-latest (node@18.17.1)	10m 49s
	1h 13m 20s

Provide feedback