2374 part2 lo l2 - add get_pset_directional_mask function to mapper tools

[tmplummer]

Change Summary

Overview

This PR adds the get_pset_directional_mask function to the corrections.py module. This is a helper function to get a pixel mask to pass to the AbstractSkyMap.project_pset_values_to_map() method that will filter ram/anti-ram pixels during the projection step.

Updated Files

• imap_processing/ena_maps/utils/corrections.py
  • Add get_pset_directional_mask helper function
  • description of change 2 in file 2
• imap_processing/hi/hi_l2.py
  • Use new get_pset_directional_mask helper funciton
• imap_processing/tests/ena_maps/test_corrections.py
  • Add test coverage for new function

Related to: #2374

[Copilot]

Pull Request Overview

This PR refactors duplicated code for directional masking into a reusable function get_pset_directional_mask(). The function extracts the logic for selecting ram, anti-ram, or full-spin data from pointing sets, which was previously duplicated in hi_l2.py.

• Introduces a new utility function get_pset_directional_mask() in corrections.py
• Refactors hi_l2.py to use the new function instead of inline logic
• Adds comprehensive test coverage for the new function

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
imap_processing/ena_maps/utils/corrections.py	Adds new get_pset_directional_mask() function to centralize directional masking logic
imap_processing/hi/hi_l2.py	Refactors to use the new utility function, removing duplicated inline code
imap_processing/tests/ena_maps/test_corrections.py	Adds comprehensive test suite for the new function

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