improve composable-cache performance

[anonrig]

We saw that under high concurrency, Nth request was taking a lot more time than others. This was caused by the composable cache. Prior to this pull-request, cache was consuming all data stream (the response of the page), just to access it and later convert it to a stream (and discard the data cached). This created a lot of GC pressure and caused a lot of unnecessary memory usage.

Subset of https://github.com/opennextjs/opennextjs-aws/pull/1002

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🦋 Changeset detected

Latest commit: 0a946d302070856bb32cb97231217ef3677beca3

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 2 packages

Name	Type
@opennextjs/aws	Patch
app-pages-router	Patch

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commit: 0a946d3