[Django Upgrade] [Reference PR] The rest of the fixes

[Johnetordoff]

Purpose

These are the final test changes and misc fixes for the Django upgrade.

Changes

• fix header changes to the response object.
• remove unused/broken update_version_metadata tests
• add DEFAULT_AUTO_FIELD to silience depreciation warnings.
• change test_node_shows_related_count_for_linked_by_relationships to match new behavior
• api_tests/nodes/views/test_node_draft_registration_detail.py to use real registration schema
• fixes provider__reviews_workflow keyword agruement provide subfactory problem with PreprintFactory
• removes 'view_node', to fix admin tests.
• turn notification email off for tests.
• reload referents for cached properties
• ensure creator auth is passed in RegistrationFactory

QA Notes

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