fix: 🔥 Fix closed event source #6091

Job	Run time
Checking if it's valid for JSR	14s
Deno	6h 0m 13s
Bun	14s
Fastly Compute	1m 1s
AWS Lambda	1m 7s
Lambda@Edge	1m 3s
Main	1m 44s
Node.js v18.18.2	1m 9s
Type & Bundle size Check on Main	0s
Type & Bundle size Check on PR	1m 12s
workerd	1m 7s
Node.js v20.x	1m 10s
Node.js v22.x	1m 6s
Coverage	0s
	6h 11m 20s

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