[v3] Defer/Stream Source is not canceled

[n1ru4l]

Describe the bug

A Stream/Defer source is not canceled (return is called on it) when I execute a GraphQL operation via GraphiQL.

Your Example Website or App

https://codesandbox.io/s/brave-sun-wy8irb?file=/src/main.ts

Steps to Reproduce the Bug or Issue

1. Open CodeSandbox
2. Start GraphQL Server
3. Visit the GraphiQL Route
4. Execute the operation query StreamAlphabet { alphabet @stream }
5. Cancel the operation midway

Expected behavior

No further publish <character> console logs occur.
cancel is logged immediately.

Screenshots or Videos

Uploading Screen Recording 2022-11-08 at 09.10.18.mov…

Platform

• OS: CodeSandbox
• NodeJS: v14.19.3
• @graphql-yoga/* 3.0.0-next.10

Additional context

No response

[n1ru4l]

Screen.Recording.2022-11-08.at.09.10.18.mov