Electron window does never confirm exit (Windows)

[msujew]

Bug Description:

#10379 introduces a check for the "main window" by comparing the current web content URL and the main html page:

theia/packages/core/src/electron-main/electron-main-application.ts

Line 490 in 17b419f

const safeToClose = !electronWindow.webContents.getURL().includes(this.globals.THEIA_FRONTEND_HTML_PATH) || await this.checkSafeToStop(electronWindow, reason);

However, this check fails on windows, since getURL() returns a URI path with forward slashes, while THEIA_FRONTEND_HTML_PATH uses backward slashes on windows.

Steps to Reproduce:

1. Start the electron app on Windows
2. Set the application.confirmExit preference to always
3. Exit the app, no confirmation dialog is displayed

Additional Information

• Operating System: Windows
• Theia Version: 1.21.0