Missing trailing commas (#41473)

* add missing trailing commas

* add more missing trailing commas

* add more and more missing trailing commas

packages/flutter_tools/lib/src/device.dart

diff --git a/packages/flutter_tools/lib/src/device.dart b/packages/flutter_tools/lib/src/device.dart
index 1d18343..404ff6f 100644
--- a/packages/flutter_tools/lib/src/device.dart
+++ b/packages/flutter_tools/lib/src/device.dart
@@ -179,7 +179,7 @@
         for (Device device in devices)
           if (await device.targetPlatform != TargetPlatform.fuchsia &&
               await device.targetPlatform != TargetPlatform.web_javascript)
-            device
+            device,
       ];
     }
 
@@ -190,7 +190,7 @@
       devices = <Device>[
         for (Device device in devices)
           if (isDeviceSupportedForProject(device, flutterProject))
-            device
+            device,
       ];
     } else if (devices.length == 1 &&
              !hasSpecifiedDeviceId &&