Improve schema config migration utils

[sharadsw]

Fixes #5469

• Fields that don't exist in the latest state of the datamodel will be skipped when creating Schema Config entries
• Changed the util functions to use get_or_create() instead of create() to avoid duplicate Schema Config entries. Ideally, we should no longer need to revert an entry before adding it anymore like here:

  specify7/specifyweb/specify/migrations/0015_add_version_to_ages.py

  Lines 6 to 13 in c75cf54

  	def update_schema_config(apps):
  	# Revert before adding to avoid duplicates
  	revert_update(apps)
  	Discipline = apps.get_model('specify', 'Discipline')
  	for discipline in Discipline.objects.all():
  	update_table_field_schema_config_with_defaults('AbsoluteAge', discipline.id, 'version', apps)
  	update_table_field_schema_config_with_defaults('RelativeAge', discipline.id, 'version', apps)

Checklist

• Self-review the PR after opening it to make sure the changes look good
  and self-explanatory (or properly documented)
• Add automated tests
• Add relevant issue to release milestone

Testing instructions

Dev testing only?

• Try to apply the 0013 migration manually
• Verify there are no errors (there will be a warning for adding COG -> parentCog)

[melton-jason]

Lot of nice changes here!
I haven't tested the changes yet, but the code looks good.

[grantfitzsimmons]

Tested with a database that has never been used in development (last used on v7.9.6.2):

specify7-1         |   Applying specify.0002_geo... OK
specify7-1         |   Applying businessrules.0003_catnum_constraint... OK
specify7-1         |   Applying businessrules.0004_catnum_uniquerule... OK
specify7-1         |   Applying businessrules.0005_cojo... OK
specify7-1         |   Applying specify.0003_cotype_picklist... OK
specify7-1         |   Applying specify.0004_stratigraphy_age... OK
specify7-1         |   Applying specify.0005_collectionobjectgroup_parentcojo... OK
specify7-1         |   Applying specify.0006_fix_tectonic_tree_fields... OK
specify7-1         |   Applying specify.0007_schema_config_update... OK
specify7-1         |   Applying specify.0008_ageCitations_fix... OK
specify7-1         |   Applying specify.0009_tectonic_ranks... OK
specify7-1         |   Applying specify.0010_updateDelete_parentcojo... OK
specify7-1         |   Applying specify.0011_cascading_tree_nodes... OK
specify7-1         |   Applying specify.0012_add_cojo_to_schema_config... OK
specify7-1         | [16/Dec/2024 15:42:21] [WARNING] [specifyweb.specify.migration_utils.update_schema_config:164] Field does not exist in latest state of the datamodel, skipping Schema Config entry for: CollectionObjectGroup -> parentCog
specify7-1         |   Applying specify.0013_collectionobjectgroup_parentcog... OK
specify7-1         |   Applying specify.0014_spqueryfield_strict... OK
specify7-1         |   Applying specify.0015_add_version_to_ages... OK
specify7-1         |   Applying specify.0016_collectionobjecttype_catalognumformatname... OK
specify7-1         |   Applying specify.0017_schemaconfig_fixes... OK
specify7-1         |   Applying specify.0018_cot_catnum_schema... OK
specify7-1         |   Applying specify.0019_remove_parentCog... OK
specify7-1         | Watching for file changes with StatReloader

👍