PNPM deps check and peer-resolved entries preserved; JIT precomputed

<!-- Release notes generated using configuration in .github/release.yml at v2.9.19-canary.6 -->

What's Changed

Changelog

• release(turborepo): 2.9.19-canary.5 by @github-actions[bot] in https://github.com/vercel/turborepo/pull/13079
• fix: Preserve PNPM deps check config by @anthonyshew in https://github.com/vercel/turborepo/pull/13084
• fix: Speed up default create-turbo download by @anthonyshew in https://github.com/vercel/turborepo/pull/13085
• fix: Preserve pnpm peer-resolved prune entries by @anthonyshew in https://github.com/vercel/turborepo/pull/13086
• fix: Precompute unblocked JIT descendants by @anthonyshew in https://github.com/vercel/turborepo/pull/13088
• fix: Use repo package manager for generate by @anthonyshew in https://github.com/vercel/turborepo/pull/13089
• fix: Handle Windows package manager shutdown by @anthonyshew in https://github.com/vercel/turborepo/pull/13090

Full Changelog: https://github.com/vercel/turborepo/compare/v2.9.19-canary.5...v2.9.19-canary.6