`inject-listener-code` plugin adds a `PropertyChangeSupport` field but no code to trigger the events in setters

[ppalaga]

A test demonstrating the issue: #617

[laurentschoelens]

Hi @ppalaga

Thanks for your feedback.
I'll check this bug and see what is missing (this plugin was taken back from another unmaintained plugin's source).

Regards

[laurentschoelens]

@ppalaga submitted PR to fix this bug

I think the plugin's original code was incomplete 😑