Page.once doesn't clean up request interceptors

[HitkoDev]

Steps to reproduce

Tell us about your environment:

• Puppeteer version: 10.2.0
• Platform / OS version: all
• URLs (if applicable): N/A
• Node.js version: 16

What steps will reproduce the problem?

Please include code that reproduces the issue.

const interceptor = (request) => console.log(request.url())
page.once("request", interceptor)
page.goto(`http://google.com`)

What is the expected result?

Logs URL of the first request (http://google.com), then removes interceptor.

What happens instead?

Logs all URLs, including subsequent requests (e.g. CSS stylesheets).

[zeen]

This is likely due to the now fixed #7572 and seems to no longer be happening in 12.0.0.