src/vs/workbench/browser/parts/titlebar/menubarControl.ts/CustomMenubarControl/currentEnableMenuBarMnemonics
class CustomMenubarControl:	private get currentEnableMenuBarMnemonics(): boolean {
		let enableMenuBarMnemonics = this.configurationService.getValue<boolean>('window.enableMenuBarMnemonics');
		if (typeof enableMenuBarMnemonics !== 'boolean') {
			enableMenuBarMnemonics = true;
		}

		return enableMenuBarMnemonics && (!isWeb || isFullscreen());
	}