Click the cancel button when scanning the scan window will not disappear

[leiouotto]

Describe the bug
Click the cancel button when scanning the scan window will not disappear immediately, but timeout for a period of time and then disappear

To Reproduce
Steps to reproduce the behavior:

1. Enter the NAPS2 main interface.
2. Place a sample sheet on the printer's flatbed, select the corresponding printer device, and click the Scan button.
3. Click the Cancel button in the scanning window while the printer is scanning
4. At this point, the ongoing scanning operation on the printer can be canceled. However, clicking the Close button in the scanning window does not close the window immediately; instead, you need to wait for a timeout period before the window disappears.

Expected behavior
When the printer is scanning, clicking the Cancel button should stop the printer's scanning operation. After that, clicking the Close button should close the scanning window.

Screenshots

Desktop (please complete the following information):

• OS: Windows 11
• Version 7.5.1.0 and 7.5.2.0

Additional context
Add any other context about the problem here.