Pull Request for Issue #36343
Testing Instructions
Code review should be enough. But if is needed:
Actual result BEFORE applying this Pull Request
In the administration area, discover a extension (be sure before have the script.{extension_name}.php file with some message to show) and install it. After installed, you will see only the default successful installation message, but none from the script
Expected result AFTER applying this Pull Request
After installed, you will see the default successful installation message, but also the messages from the script

Thank you