fix end function when piping on request

[aaharu]

Checklist

rework of #742

• I have ensured my pull request is not behind the main or master branch of the original repository.
• I have rebased all commits where necessary so that reviewing this pull request can be done without having to merge it first.
• I have written a commit message that passes commitlint linting.
• I have ensured that my code changes pass linting tests.
• I have ensured that my code changes pass unit tests.
• I have described my pull request and the reasons for code changes along with context if necessary.

[thehenrymcintosh]

I'm also having this issue - thank you for the fix @aaharu

[nabramow]

Would also love to see this PR go in! We're running into the issue with our repo!

[titanism]

please review your commit and fix these typos

[titanism]

45183e1#r1884627759

[titanism]

🎉 This should now be resolved, please upgrade to the latest versions of supertest and superagent:

• supertest v7.1.2 released to npm https://github.com/forwardemail/supertest/releases/tag/v7.1.2
• superagent v10.2.2 released to npm https://github.com/forwardemail/superagent/releases/tag/v10.2.2

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