test: Fix and update recursive-delete benchmarks (#84875)
PR created with claude code, with some manual review.
- Update benchmark scripts to work, given my recent code changes
- Include a native nodejs benchmark
- Use rimraf's `manual` implementation (tries to use node's native version)
- Tried to clean up the code a bit
- Use a trap to always clean up
- Use getopt and add an `--iterations` option
- `set -euo pipefail` to avoid swallowing errors
Example output:
```
pnpm bench
> bench-recursive-delete@ bench /home/bgw.linux/next.js/bench/recursive-delete
> bash run.sh
-----------
rimraf (async) 1
62.443657
rimraf (async) 2
52.953482
rimraf (async) 3
52.029235
rimraf (async) 4
50.709822
rimraf (async) 5
54.204893
-----------
rimraf (sync) 1
35.034669
rimraf (sync) 2
35.663417
rimraf (sync) 3
46.360754
rimraf (sync) 4
36.859329
rimraf (sync) 5
34.368796
-----------
recursive delete 1
37.851534
recursive delete 2
35.98904
recursive delete 3
36.620913
recursive delete 4
38.059992
recursive delete 5
43.880346
-----------
nodejs rm (promises) 1
71.301125
nodejs rm (promises) 2
89.78331
nodejs rm (promises) 3
68.073553
nodejs rm (promises) 4
70.787543
nodejs rm (promises) 5
73.727616
-----------
nodejs rm (callback) 1
92.698258
nodejs rm (callback) 2
73.043993
nodejs rm (callback) 3
70.869584
nodejs rm (callback) 4
69.196757
nodejs rm (callback) 5
75.715526
-----------
nodejs rm (sync) 1
41.71002
nodejs rm (sync) 2
41.742395
nodejs rm (sync) 3
38.894571
nodejs rm (sync) 4
41.326271
nodejs rm (sync) 5
48.152122
```
