Re-endorse connectivity_for_web (flutter#3708)

Signed-off-by: Sunbreak <sunbreak.wang@gmail.com>

Author: Sunbreak

packages/connectivity/connectivity/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 3.0.3
+
+* Re-endorse connectivity_for_web
+
 ## 3.0.2
 
 * Update platform_plugin_interface version requirement.

packages/connectivity/connectivity/pubspec.yaml

@@ -2,7 +2,7 @@ name: connectivity
 description: Flutter plugin for discovering the state of the network (WiFi &
   mobile/cellular) connectivity on Android and iOS.
 homepage: https://github.com/flutter/plugins/tree/master/packages/connectivity/connectivity
-version: 3.0.2
+version: 3.0.3
 
 flutter:
   plugin:
@@ -22,10 +22,8 @@ dependencies:
     sdk: flutter
   meta: ^1.3.0
   connectivity_platform_interface: ^2.0.0
-  #TODO(cyanglaz): re-endorse the below plugins when they have migrated to nnbd.
-  # https://github.com/flutter/flutter/issues/68669
   connectivity_macos: ^0.2.0
-  # connectivity_for_web: ^0.3.0
+  connectivity_for_web: ^0.4.0
 
 dev_dependencies:
   flutter_test: