Dmitry Gozman

@yangsisi0422 This PR looks great! However, I can only merge it after you agree with the CLA - please see [this comment](https://github.com/microsoft/playwright/pull/33774#issuecomment-2507371046). Thank you!

@karolwajs Thank you for the issue! It seems like there is a difference in how new and old headless handle these iframes. However, it's unlikely we can fix the issue...

@karolwajs Unfortunately, clicking "Booking now" does not open any iframe for me. But even then, guessing the actions that do not work is not something that I'd like to do....

Investigation notes: - scrolling works fine; - when dispatching the mouse event, it never arrives to the OOPIF; - passing `args: ['--disable-site-isolation-trials']` fixes the issue; - most likely, [this upstream...