[Bug]: mock mobile device in chrome/chromium, open a video page, can not scroll to next page or next video

[conhaifeng]

Version

1.55.0

Steps to reproduce

1. open the target url in chromium, mock iPhone 13

from playwright.sync_api import sync_playwright, Playwright

iphone_13 = playwright.devices['iPhone 13']
browser = playwright.chromium.launch(headless=False)
context = browser.new_context(
	**iphone_13,
)
page = context.new_page()
url = "https://m.toutiao.com/video/7578574827087216640"
page.goto(url)

2. try to scroll to next video in this page by mouse or pan by locator, like below

def pan(locator, deltaX=0, deltaY=0, steps=5):
    bounds = locator.bounding_box()
    centerX = bounds['x'] + bounds['width'] / 2
    centerY = bounds['y'] + bounds['height'] / 2

    touches = [{
        'identifier': 0,
        'clientX': centerX,
        'clientY': centerY,
    }]
    locator.dispatch_event('touchstart', {
        'touches': touches,
        'changedTouches': touches,
        'targetTouches': touches
    })

    for i in range(1, steps + 1):
        touches = [{
            'identifier': 0,
            'clientX': centerX + deltaX * i / steps,
            'clientY': centerY + deltaY * i / steps,
        }]
        locator.dispatch_event('touchmove', {
            'touches': touches,
            'changedTouches': touches,
            'targetTouches': touches
        })

    locator.dispatch_event('touchend')

3. ignore the video can not play error,

Expected behavior

1. I can scroll to next video

Actual behavior

1. can not scroll to next video mock iPhone13 is_mobile: True has_touch: True 2.debug by F12, when i scroll, only MouseDown event, no TouchStart event

Additional context

1.when i mock iPhone13 by chrome: F12 -- Toggle device toolbar -- select iPhone 13 or any other device, i can scroll to next video. so it is mostly sitll web mode when use playwright mock iPhone13

Environment

- Operating System: [window10]
- CPU: [arm64]
- Browser: [Chrome, Chromium, WebKit]
- Python Version: [3.10]
- Other info: