test: disable next-test playwright test (#65460)
Temporarily disable next-test to unblock PR merging
x-ref:
https://github.com/vercel/next.js/actions/runs/8987370810/job/24685709097?pr=65446
x-ref:
https://github.com/vercel/next.js/actions/runs/8984462915/job/24682025154?pr=65041
Closes NEXT-3349
