[BUG] browser.closeAsync not working for remote connect

[Archish27]

Context:

• Playwright Version: 1.15.0
• Operating System: Mac
• Node.js version: [e.g. 12.22, 14.6]
• Browser: Al
• Extra: [any specific details about your environment]

Code Snippet Help us help you! Put down a short code snippet that illustrates your bug and that we can run and debug locally. For example:

using System;
using System.Threading.Tasks;
using Microsoft.Playwright;

class Program
{
    public static async Task Main(string[] args)
    {
        using var playwright = await Playwright.CreateAsync();
        await using var browser = await playwright.Chromium.ConnectAsync("ws://127.0.0.1:9222/<url>");
        var page = await browser.NewPageAsync();
        await page.GotoAsync("https://playwright.dev/dotnet");
        await browser.CloseAsync();
    }
}

Describe the bug

browser doesn't close when closeAsync is called therefore test hangs. Works for LaunchAsync but not for ConnectAsyc

[mxschmitt]

Closing since there is no ConnectAsync in Playwright .NET.