Implement page.on('requestfailed')

[ankur22]

Feature Description

page.on('requestfailed') should be called when the request fails to be sent to the website under test (WuT). So not when k6 browser receives 404/500 back from the server (which is regarded as a success and will be directed to page.on('requestfinished')).

When implementing page.on('request') and page.on('response') it became apparent that some of the methods on the request and response objects didn't behave the same as in Playwright. However, to overcome the shortfalls (1, 2) in page.on('request') a user should work with page.on('response') and to overcome the shortfall in that, we should implement both page.on('requestfailed') and page.on('requestfinished').

Suggested Solution (optional)

The implementation should be fairly trivial and these two PRs should help with the implementation:

1. Add page.on('request') #4290
2. Add page.on('response') #4296

The call to the handle should be done from onLoadingFailed.

Already existing or connected issues / PRs (optional)

Connected to: #4234