Skip QTables in individual image metadata.

[schlafly]

This PR adds QTable to the list of things to skip for the individual image metadata.

QTables get made as part of the PSF catalog that is now the tweakreg_catalog, instead of the old ndarray.

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 97.09%. Comparing base (087a60d) to head (1bcce9c).
Report is 18 commits behind head on main.

Files	Patch %	Lines
src/roman_datamodels/datamodels/_datamodels.py	50.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #349      +/-   ##
==========================================
- Coverage   97.56%   97.09%   -0.47%     
==========================================
  Files          30       31       +1     
  Lines        2788     3063     +275     
==========================================
+ Hits         2720     2974     +254     
- Misses         68       89      +21     

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[schlafly]

@PaulHuwe , I needed this in order to get the IIM to work with the new astropy Table PSF catalogs. Because those are now an astropy table rather than an ndarray the special casing in IIM was not catching them. Any objection to merging this? I think this is the only roman_datamodels update needed.

[PaulHuwe]

LGTM. Update the change log, please.

[PaulHuwe]

Merging.