Region-mask the climatology in all scoring pipelines

[wael-mika]

Description

Basically what I changed here is applying region sepcific box on climatology so the plots and scores can be calculated with no issues when specifying a region for your evaluation.

I tested it on few runs (imerg and seeps) for 5 regions ['nhem', 'shem', 'tropics', 'europe', 'globa'] and it worked without producing
the alignment error: AlignmentError: cannot align … join='exact' for seeps.

I am not sure if I touched all the needed file and if this fix could lead to an error somewhere else and I would strongly recommend a rigorous review

Issue Number

Closes #2696

Is this PR a draft? Mark it as draft.

Checklist before asking for review

• I have performed a self-review of my code
• My changes comply with basic sanity checks:
  • I have fixed formatting issues with ./scripts/actions.sh lint
  • I have run unit tests with ./scripts/actions.sh unit-test
  • I have documented my code and I have updated the docstrings.
  • I have added unit tests, if relevant
• I have tried my changes with data and code:
  • I have run the integration tests with ./scripts/actions.sh integration-test
  • (bigger changes) I have run a full training and I have written in the comment the run_id(s): launch-slurm.py --time 60
  • (bigger changes and experiments) I have shared a hegdedoc in the github issue with all the configurations and runs for this experiments
• I have informed and aligned with people impacted by my change:
  • for config changes: the MatterMost channels and/or a design doc
  • for changes of dependencies: the MatterMost software development channel

[iluise]

tested it and it works! I approve it, even if also @jpolz should probably take a look here