Lb302 does not reset state before/after export

[Michael Gregorius]

Lb302 does not reset it's state before/after an export. Therefore if you export a project twice the Lb302 tracks will differ in phase.

Expected Behaviour

The exports should be identical.

Steps To Reproduce

1. Decompress the attached file 7223-Lb302-Project.zip.
2. Open the project.
3. Export the project into First.wav.
4. Export the project into Second.wav.
5. Compare the files in an audio editor.

Please also refer to the comments starting from here for more details: #7230 (comment)