Edit sessions shows modal dialog

[jrieken]

Testing #158798

• Continue from web inside desktop
• Let the window sit
• Install update (which restarts the App)
• 🧀 you are instantly greeted with a modal dialog (I wasn't even in that window of VS Code)

Ideas

• don't use a modal but the custom modal overlay which is more friendly and doesn't steep focus
• don't show this when my local changes are no different to those on the server

[joyceerhl]

don't use a modal but the custom modal overlay which is more friendly and doesn't steep focus

Is the custom modal overlay the same thing as the custom modal dialog, i.e.

await this.dialogService.show(Severity.Warning, 'my message', ['my options'], { custom: true });

don't show this when my local changes are no different to those on the server

👍 I filed #159689 for this.