perf: reduce memory consumption of paths

[h-a-n-a]

Summary

Reduced a big amount of memory of copying PathBufs.

Checklist

• Tests updated (or not required).
• Documentation updated (or not required).

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[h-a-n-a]

!bench

[rspack-bot]

📝 Benchmark detail: Open

Name	Base (2024-12-02 5a967f7)	Current	Change
10000_big_production-mode_disable-minimize + exec	42.8 s ± 1.97 s	42.6 s ± 535 ms	-0.34 %
10000_development-mode + exec	1.8 s ± 45 ms	1.82 s ± 29 ms	+1.25 %
10000_development-mode_hmr + exec	648 ms ± 5.5 ms	649 ms ± 8 ms	+0.13 %
10000_production-mode + exec	2.39 s ± 30 ms	2.4 s ± 48 ms	+0.23 %
arco-pro_development-mode + exec	1.73 s ± 82 ms	1.78 s ± 91 ms	+2.44 %
arco-pro_development-mode_hmr + exec	426 ms ± 2.5 ms	426 ms ± 1.1 ms	+0.09 %
arco-pro_production-mode + exec	3.13 s ± 60 ms	3.11 s ± 70 ms	-0.41 %
arco-pro_production-mode_generate-package-json-webpack-plugin + exec	3.16 s ± 77 ms	3.19 s ± 38 ms	+1.07 %
threejs_development-mode_10x + exec	1.62 s ± 15 ms	1.63 s ± 17 ms	+0.15 %
threejs_development-mode_10x_hmr + exec	810 ms ± 8.1 ms	810 ms ± 20 ms	+0.05 %
threejs_production-mode_10x + exec	4.94 s ± 37 ms	4.92 s ± 30 ms	-0.36 %
10000_big_production-mode_disable-minimize + rss memory	13399 MiB ± 459 MiB	13334 MiB ± 127 MiB	-0.49 %
10000_development-mode + rss memory	775 MiB ± 13.2 MiB	777 MiB ± 28.7 MiB	+0.32 %
10000_development-mode_hmr + rss memory	2010 MiB ± 398 MiB	2119 MiB ± 237 MiB	+5.44 %
10000_production-mode + rss memory	671 MiB ± 27.6 MiB	659 MiB ± 24.1 MiB	-1.69 %
arco-pro_development-mode + rss memory	741 MiB ± 47.6 MiB	725 MiB ± 43.6 MiB	-2.13 %
arco-pro_development-mode_hmr + rss memory	922 MiB ± 152 MiB	938 MiB ± 89.4 MiB	+1.70 %
arco-pro_production-mode + rss memory	878 MiB ± 26.9 MiB	871 MiB ± 50.3 MiB	-0.84 %
arco-pro_production-mode_generate-package-json-webpack-plugin + rss memory	871 MiB ± 38.5 MiB	861 MiB ± 51.6 MiB	-1.18 %
threejs_development-mode_10x + rss memory	830 MiB ± 31.6 MiB	812 MiB ± 53.8 MiB	-2.13 %
threejs_development-mode_10x_hmr + rss memory	2115 MiB ± 194 MiB	2132 MiB ± 210 MiB	+0.77 %
threejs_production-mode_10x + rss memory	1037 MiB ± 68.4 MiB	1052 MiB ± 31.7 MiB	+1.40 %