perf(trie-router): optimize 2x faster #6029

Job	Run time
Deno	14s
Bun	5s
Fastly Compute	1m 3s
Checking if it's valid for JSR	13s
AWS Lambda	1m 2s
Lambda@Edge	1m 2s
Main	19s
Node.js v18.18.2	1m 4s
Type & Bundle size Check on Main	0s
Node.js v20.x	1m 3s
Type & Bundle size Check on PR	1m 12s
workerd	1m 9s
Node.js v22.x	1m 5s
Coverage	0s
	9m 31s

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