perf(trie-router): optimize 2x faster #6031

Job	Run time
Bun	5s
Deno	13s
Fastly Compute	1m 1s
Checking if it's valid for JSR	10s
AWS Lambda	1m 2s
Lambda@Edge	1m 1s
Main	2m 5s
Node.js v18.18.2	1m 6s
Type & Bundle size Check on PR	1m 28s
workerd	1m 6s
Node.js v20.x	1m 2s
Node.js v22.x	1m 5s
Type & Bundle size Check on Main	0s
Coverage	13s
	11m 37s

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