src/vs/workbench/electron-sandbox/desktop.main.ts/DesktopMain/getExtraClasses
class DesktopMain:	private getExtraClasses(): string[] {
		if (isMacintosh) {
			if (this.configuration.os.release > '20.0.0') {
				return ['macos-bigsur-or-newer'];
			}
		}

		return [];
	}