child_process: refactor to use more primordials

[Lxxyx]

Checklist

• make -j4 test (UNIX), or vcbuild test (Windows) passes
• commit message follows commit guidelines

[aduh95]

Thanks for your PR. Please remove the unrelated changes, and I've also let a comment on an optimisation we can make.

[aduh95]

The benchmark suite is crashing before completion, I've opened #36295 to fix that.

[aduh95]

Benchmark CI: https://ci.nodejs.org/view/Node.js%20benchmark/job/benchmark-node-micro-benchmarks/747/console

[aduh95]

Benchmark results:

                                                                                confidence improvement accuracy (*)    (**)   (***)
child_process/child-process-params.js params=1 methodName='execFile' n=1000             **     -5.19 %       ±3.52%  ±4.71%  ±6.20%
child_process/child-process-params.js params=2 methodName='execFile' n=1000              *     -3.18 %       ±2.91%  ±3.91%  ±5.14%
child_process/child-process-params.js params=2 methodName='spawn' n=1000                 *      2.65 %       ±2.61%  ±3.48%  ±4.54%
child_process/child-process-params.js params=2 methodName='spawnSync' n=1000             *     -4.32 %       ±3.80%  ±5.09%  ±6.71%
child_process/child-process-params.js params=3 methodName='exec' n=1000                  *     -1.94 %       ±1.74%  ±2.32%  ±3.02%
child_process/child-process-read.js dur=5 len=4096                                       *    -10.08 %       ±9.24% ±12.30% ±16.01%

                                                                                confidence improvement accuracy (*)    (**)   (***)
child_process/child-process-exec-stdout.js dur=5 len=1024                                      -0.06 %       ±0.30%  ±0.40%  ±0.53%
child_process/child-process-exec-stdout.js dur=5 len=256                                        0.03 %       ±0.20%  ±0.27%  ±0.35%
child_process/child-process-exec-stdout.js dur=5 len=32768                                     -0.00 %       ±0.01%  ±0.01%  ±0.01%
child_process/child-process-exec-stdout.js dur=5 len=4096                                       0.32 %       ±1.14%  ±1.51%  ±1.97%
child_process/child-process-exec-stdout.js dur=5 len=64                                         0.00 %       ±0.01%  ±0.01%  ±0.01%
child_process/child-process-params.js params=1 methodName='execFile' n=1000             **     -5.19 %       ±3.52%  ±4.71%  ±6.20%
child_process/child-process-params.js params=1 methodName='execFileSync' n=1000                 0.55 %       ±5.21%  ±6.94%  ±9.04%
child_process/child-process-params.js params=1 methodName='exec' n=1000                        -0.76 %       ±1.86%  ±2.48%  ±3.22%
child_process/child-process-params.js params=1 methodName='execSync' n=1000                    -1.29 %       ±3.62%  ±4.82%  ±6.29%
child_process/child-process-params.js params=1 methodName='spawn' n=1000                       -1.42 %       ±1.89%  ±2.52%  ±3.28%
child_process/child-process-params.js params=1 methodName='spawnSync' n=1000                   -1.87 %       ±3.18%  ±4.24%  ±5.55%
child_process/child-process-params.js params=2 methodName='execFile' n=1000              *     -3.18 %       ±2.91%  ±3.91%  ±5.14%
child_process/child-process-params.js params=2 methodName='execFileSync' n=1000                -1.73 %       ±4.37%  ±5.81%  ±7.57%
child_process/child-process-params.js params=2 methodName='exec' n=1000                        -0.77 %       ±1.80%  ±2.39%  ±3.11%
child_process/child-process-params.js params=2 methodName='execSync' n=1000                     0.38 %       ±2.58%  ±3.44%  ±4.48%
child_process/child-process-params.js params=2 methodName='spawn' n=1000                 *      2.65 %       ±2.61%  ±3.48%  ±4.54%
child_process/child-process-params.js params=2 methodName='spawnSync' n=1000             *     -4.32 %       ±3.80%  ±5.09%  ±6.71%
child_process/child-process-params.js params=3 methodName='execFile' n=1000                    -1.41 %       ±3.05%  ±4.05%  ±5.28%
child_process/child-process-params.js params=3 methodName='execFileSync' n=1000                -2.51 %       ±3.64%  ±4.86%  ±6.35%
child_process/child-process-params.js params=3 methodName='exec' n=1000                  *     -1.94 %       ±1.74%  ±2.32%  ±3.02%
child_process/child-process-params.js params=3 methodName='spawn' n=1000                        1.99 %       ±2.79%  ±3.72%  ±4.85%
child_process/child-process-params.js params=3 methodName='spawnSync' n=1000                    2.45 %       ±4.77%  ±6.35%  ±8.27%
child_process/child-process-params.js params=4 methodName='execFile' n=1000                    -1.66 %       ±2.70%  ±3.60%  ±4.70%
child_process/child-process-read-ipc.js dur=5 len=1024                                         -0.37 %       ±3.09%  ±4.11%  ±5.34%
child_process/child-process-read-ipc.js dur=5 len=1048576                                       3.12 %       ±6.50%  ±8.66% ±11.30%
child_process/child-process-read-ipc.js dur=5 len=16384                                         0.53 %       ±2.96%  ±3.94%  ±5.13%
child_process/child-process-read-ipc.js dur=5 len=2097152                                      -6.63 %      ±15.90% ±21.20% ±27.70%
child_process/child-process-read-ipc.js dur=5 len=256                                           2.02 %       ±3.44%  ±4.57%  ±5.95%
child_process/child-process-read-ipc.js dur=5 len=4096                                         -0.05 %       ±3.52%  ±4.68%  ±6.09%
child_process/child-process-read-ipc.js dur=5 len=64                                           -2.14 %       ±3.01%  ±4.02%  ±5.25%
child_process/child-process-read-ipc.js dur=5 len=65536                                        -1.26 %       ±1.43%  ±1.90%  ±2.48%
child_process/child-process-read.js dur=5 len=1024                                             -1.59 %      ±14.56% ±19.37% ±25.22%
child_process/child-process-read.js dur=5 len=256                                              -5.47 %      ±17.60% ±23.45% ±30.58%
child_process/child-process-read.js dur=5 len=32768                                             2.35 %      ±15.29% ±20.35% ±26.50%
child_process/child-process-read.js dur=5 len=4096                                       *    -10.08 %       ±9.24% ±12.30% ±16.01%
child_process/child-process-read.js dur=5 len=64                                                2.21 %      ±16.92% ±22.51% ±29.30%
child_process/spawn-echo.js n=1000                                                             -0.19 %       ±1.63%  ±2.17%  ±2.82%

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/34736/ ✅

[github-actions]

Landed in a897a25...f7dd330