Store chain in depletion results

[GuySten]

Description

This PR store chain in depletion results so it is clear which data was used for depletion and how to calculate activity.

Fixes #3529

Checklist

• I have performed a self-review of my own code
• I have run clang-format (version 15) on any C++ source files (if applicable)
• I have followed the style guidelines for Python source files (if applicable)
• I have made corresponding changes to the documentation (if applicable)
• I have added tests that prove my fix is effective or that my feature works (if applicable)