Update revalidateTag to batch tags in one request (#65296)
As discussed this collects all `revalidateTag` calls and invokes in a
single request to avoid race conditions and overhead from multiple
pending requests.
x-ref: [slack
thread](https://vercel.slack.com/archives/C0676QZBWKS/p1714688045037509?thread_ts=1710902198.529179&cid=C0676QZBWKS)
Closes NEXT-3306
