Download Task is canceled just when the triggering download browser is closed.

[cmf41013]

Describe the bug
A clear and concise description of what the bug is.
Download can't be continue when only the download source brower window is closed but the process is still running.

To Reproduce
Steps to reproduce the behavior:

1. Startup cefclient.exe and open more than two browser window
2. in one browser window , start a download file, when the file is downloading, close the browser window, then the downlod task is canceled.

Expected behavior
A clear and concise description of what you expected to happen and what happened instead.
Liking chrome, the downlod task is not interrupted though the download source browser is closed, downlod task continues until all the browsers are closed and exit process.

Screenshots
If applicable, add screenshots to help explain your problem.

Versions (please complete the following information):

• OS: [win10
• CEF Version: [129.0.12+gf09539f+chromium-129.0.6668.101], maybe all the cef versions.

Additional context
Does the problem reproduce with the cefclient or cefsimple sample application at the same version?
yes, cefclient appears.

Does the problem reproduce with Google Chrome at the same version?
No

Add any other context about the problem here.
Does CEF has the plan to support the download task very well like chrome?