UNC follow up changes (#181946)

* settings include update

* more cleanup

src/vs/workbench/browser/workbench.contribution.ts

@@ -697,7 +697,7 @@ const registry = Registry.as<IConfigurationRegistry>(ConfigurationExtensions.Con
 				},
 				'default': [],
 				'markdownDescription': localize('security.allowedUNCHosts', 'A set of UNC host names to allow without user confirmation. If a UNC host is being accessed that is not allowed via this setting or has not been acknowledged via user confirmation, an error will occur and the operation stopped. A restart is required when changing this setting. Find out more about this setting at https://aka.ms/vscode-windows-unc.'),
-				'included': isWindows,
+				'included': isWeb ? true /* web maybe connected to a windows machine */ : isWindows,
 				'scope': ConfigurationScope.MACHINE
 			}
 		}