refactor(helper/streaming): Avoid attaching AbortSignal on newer vers… #6185

Job	Run time
Deno	14s
Checking if it's valid for JSR	14s
Fastly Compute	49s
Bun	10s
Main	1m 51s
Node.js v18.18.2	55s
Lambda@Edge	45s
Node.js v20.x	48s
Type & Bundle size Check on Main	1m 2s
Node.js v22.x	50s
Type & Bundle size Check on PR	0s
workerd	51s
AWS Lambda	46s
Coverage	12s
	9m 27s

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