Use multiclass of uint32 and Enum rather than IntEnum

[WilliamJamieson]

As part of the discussion in numpy/numpy#27540 about an issue related to the dq flags, it was suggested to instead do a multiclass of np.uint32 and Enum rather than IntEnum (which under the hood is a multiclass of int and Enum). This is so that we prevent any mistakes related to choosing invalid integers under uint32.

Tasks

• Update or add relevant roman_datamodels tests.
• Update relevant docstrings and / or docs/ page.
• Does this PR change any API used downstream? (If not, label with no-changelog-entry-needed.)
  • Write news fragment(s) in changes/: echo "changed something" > changes/<PR#>.<changetype>.rst (see below for change types).
  • Start a romancal regression test (https://github.com/spacetelescope/RegressionTests/actions/workflows/romancal.yml) with this branch installed ("git+https://github.com/<fork>/rad@<branch>").

News fragment change types:

• changes/<PR#>.feature.rst: new feature
• changes/<PR#>.bugfix.rst: fixes an issue
• changes/<PR#>.doc.rst: documentation change
• changes/<PR#>.removal.rst: deprecation or removal of public API
• changes/<PR#>.misc.rst: infrastructure or miscellaneous change

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.42%. Comparing base (087a60d) to head (57449fe).
Report is 66 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #402      +/-   ##
==========================================
- Coverage   97.56%   97.42%   -0.14%     
==========================================
  Files          30       37       +7     
  Lines        2788     3451     +663     
==========================================
+ Hits         2720     3362     +642     
- Misses         68       89      +21     

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

[PaulHuwe]

This looks good to me - let's wait until the mid-build release and then do a regtest with it as a sanity check.

[WilliamJamieson]

This looks good to me - let's wait until the mid-build release and then do a regtest with it as a sanity check.

This is currently blocked by spacetelescope/romancal/#1480, which makes a small change to cast back to python integer due to use of one of the methods that numpy integers do not replicate from python integers.

[WilliamJamieson]

This passes regression tests https://github.com/spacetelescope/RegressionTests/actions/runs/11670565333

[PaulHuwe]

LGTM