* chore(bench): add Cargo repeat-install scenario to integrated-benchmark
Add the cargo.repeat-install.hot-cache.hot-store scenario to
pnpm-integrated-benchmark and the CI integrated-benchmark workflow
to guard Cargo crate slot reuse (pnpm/pnpm#17105).
* fix(bench): isolate cargo repeat-install benchmark from parent workspace
* fix(bench): connect generated crates in Cargo dependency graph and verify prewarm slots