loadFromString parameter error #138

Description:

loadFromString doesnt seem to be a drop in replacement of testLoad.
After changing it, it shows that "No named parameter with the name 'fileInput' exists"
This is probably a bug. So either changes are needed in the code or we need to change the documentation and the changelogs to change the fileInput parameter to envString.
Also i would like to work on this if its possible. Just let me know towards which approach are we going towards.

Versions:

Dart SDK: 3.8.1
Flutter: 3.32.8
flutter_dotenv: ^6.0.0