app.exit does not close browser window in chrome mode

Describe the bug In chrome mode, Neutralino.app.exit leaves an orphaned chrome window. This is almost certainly not how the system should function.

To Reproduce Steps to reproduce the behavior:

1. Run a neutralino application in chrome mode and execute Neutralino.app.exit().
2. Observe that the chrome window remains, but the backing neutralino process is terminated.

Expected behavior The chrome browser window should close at the same time.

Screenshots/Screen recordings N/A

Specifications

• OS: linux
• Neutralinojs version: 6.9.0
• Neutralinojs client library version: 6.9.0
• Neutralinojs CLI version: 11.7.2

Additional context The code does not appear to track the process id or make any attempt to handle the spawned chrome process in chrome mode. This seems like simply missing functionality.