1149 bug fixing abiotic model

[vgro]

This PR gets rid of the loop for different time steps because it is currently not relevant and causes problems with getting the right time interval for the integration.

I also corrected the unit of latent heat of vaporization (*1000 everywhere) and corrected the signs of energy fluxes in places ( the convention is negative away from the surface towards the atmosphere).

I also found out why the canopy temperatures go crazy, spoiler alert: it's not the Newton method, but will address this in #1022 .

Fixes #1149

Type of change

• New feature (non-breaking change which adds functionality)
• Optimization (back-end change that speeds up the code)
• Bug fix (non-breaking change which fixes an issue)

Key checklist

• Make sure you've run the pre-commit checks: $ pre-commit run -a
• All tests pass: $ poetry run pytest

Further checks

• Code is commented, particularly in hard-to-understand areas
• Tests added that prove fix is effective or that feature works
• Relevant documentation reviewed and updated

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.36%. Comparing base (f7e89fd) to head (8493f92).

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #1153   +/-   ##
========================================
  Coverage    94.35%   94.36%           
========================================
  Files           70       70           
  Lines         7049     7041    -8     
========================================
- Hits          6651     6644    -7     
+ Misses         398      397    -1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[jacobcook1995]

Removing the looping seems sensible to me!

[jacobcook1995]

Guess this line should be deleted