add Samsung SM-J730F to isLocalEmulator (#15517)

Add another rel device to isLocalEmulator to make working flutter run --release

packages/flutter_tools/lib/src/android/android_device.dart

@@ -36,6 +36,7 @@ const Map<String, _HardwareType> _knownHardware = const <String, _HardwareType>{
   'qcom': _HardwareType.physical,
   'ranchu': _HardwareType.emulator,
   'samsungexynos7420': _HardwareType.physical,
+  'samsungexynos7870': _HardwareType.physical,
   'samsungexynos8890': _HardwareType.physical,
   'samsungexynos8895': _HardwareType.physical,
 };