perf: module group get_key

[SyMind]

Summary

Replace num_bigint::BigUint with FxHasher to avoid the overhead of hash large key in chunk_key_to_string.

It will be very evident in the HMR stage, where ChunkUkey continues to increase and BigUint values will continue to increase.

The hexadecimal string representation of BigUint can become excessively long.

let key = selected_chunks_key.to_str_radix(16);

Making its hashing computationally expensive.

module_group_map.entry(key)

Checklist

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

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[SyMind]

!bench

[rspack-bot]

📝 Benchmark detail: Open

Name	Base (2024-04-09 10b9605)	Current	Change
10000_development-mode + exec	2.65 s ± 36 ms	2.64 s ± 30 ms	-0.16 %
10000_development-mode_hmr + exec	670 ms ± 3.3 ms	667 ms ± 5.6 ms	-0.38 %
10000_production-mode + exec	2.7 s ± 40 ms	2.71 s ± 38 ms	+0.43 %
arco-pro_development-mode + exec	2.51 s ± 40 ms	2.53 s ± 67 ms	+1.03 %
arco-pro_development-mode_hmr + exec	444 ms ± 2.3 ms	442 ms ± 3.2 ms	-0.49 %
arco-pro_development-mode_hmr_intercept-plugin + exec	454 ms ± 2.7 ms	451 ms ± 2.9 ms	-0.57 %
arco-pro_development-mode_intercept-plugin + exec	3.25 s ± 57 ms	3.29 s ± 77 ms	+1.17 %
arco-pro_production-mode + exec	3.97 s ± 79 ms	3.97 s ± 97 ms	-0.02 %
arco-pro_production-mode_intercept-plugin + exec	4.72 s ± 87 ms	4.72 s ± 62 ms	+0.09 %
threejs_development-mode_10x + exec	2 s ± 22 ms	2 s ± 23 ms	-0.41 %
threejs_development-mode_10x_hmr + exec	727 ms ± 21 ms	728 ms ± 9.7 ms	+0.08 %
threejs_production-mode_10x + exec	5.28 s ± 37 ms	5.28 s ± 36 ms	-0.03 %

[SyMind]

!canary

[github-actions]

0.5.9-canary-677c131-20240409051353