guarantee cache busting param correctness (#80381)
[RSC validation](https://github.com/vercel/next.js/pull/80157) requires
`_rsc` search param to match the RSC
[hash](https://github.com/vercel/next.js/blob/06-10-remove_existing_cache_busting_param_and_add_fresh_one/packages/next/src/shared/lib/router/utils/cache-busting-search-param.ts#L3)
of request headers.
To guarantee any request initiated from Next.js meets the criteria, we
are going to remove existing cache busting param and add fresh one
**just in case the pre-existing param does not match the hash**.
Existing E2E tests should cover this change.
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Co-authored-by: graphite-app[bot] <96075541+graphite-app[bot]@users.noreply.github.com>
