Apply fixes for onBuildComplete and route module (#88831)
This applies fixes for outputs in `onBuildComplete` with various slight
differences from expected values. This also applies some fixes in the
route-module interface to ensure we install the process handlers for PPR
since currently that was done in `next-server` which we want to get rid
of and there was an edge case with query parsing logic in the
route-module.
Our E2E tests were run against this here to validate
https://github.com/vercel/next.js/actions/runs/21324578779 and failures
are matching existing failures on canary.
x-ref: https://github.com/nextjs/adapter-vercel/pull/11
x-ref: https://github.com/vercel/vercel/pull/14574
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Co-authored-by: vercel[bot] <35613825+vercel[bot]@users.noreply.github.com>
