fix(helper/adapter): correct `env` type (#3885) #6223

Job	Run time
Deno	16s
Checking if it's valid for JSR	14s
Bun	12s
Fastly Compute	48s
AWS Lambda	48s
Lambda@Edge	48s
Main	1m 54s
Node.js v18.18.2	54s
Node.js v20.x	51s
Type & Bundle size Check on Main	59s
Node.js v22.x	50s
workerd	52s
Type & Bundle size Check on PR	0s
Coverage	8s
	9m 34s

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