The action is no longer exit when flutter binary not found but warning instead

Author: socheatsok78

action.sh

@@ -5,9 +5,14 @@ if [[ -z "${ACTIONS_ID_TOKEN_REQUEST_URL}" ]] && [[ -z "${ACTIONS_ID_TOKEN_REQUE
     exit 0
 fi
 
-if [ ! "$(command -v dart)" ] && [ ! "$(command -v flutter)" ]; then
-    echo "::error::Flutter is not installed,"
-    echo "See https://github.com/flutter-actions/setup-flutter for more details."
+# Check if Dart & Flutter SDK is installed
+if  [ ! "$(command -v flutter)" ]; then
+    echo '::warning::Flutter is not installed,'
+    echo 'Please use "uses: flutter-actions/setup-flutter@v4" to setup Dart & Flutter SDK.'
+fi
+if [ ! "$(command -v dart)" ]; then
+    echo '::error::Dark is not installed'
+    echo 'Please use "uses: dart-lang/setup-dart@v1" or "uses: flutter-actions/setup-flutter@v4" to setup Dart or Flutter SDK.'
     exit 1
 fi