TEST: Lazy tree as default

[braingram]

Downstream failures when turning lazy_tree on by default:

• weldx: Several comparisons in tests fail (see https://github.com/BAMWelDX/weldx/blob/ad4b8dc8d976c1306cbdfd409c84e73f288c5686/weldx/tests/asdf_tests/test_asdf_core.py#L348) due to an exact type comparison here: https://github.com/BAMWelDX/weldx/blob/ad4b8dc8d976c1306cbdfd409c84e73f288c5686/weldx/util/util.py#L205. These can all be fixed by adding another type_equality: https://github.com/BAMWelDX/weldx/blob/ad4b8dc8d976c1306cbdfd409c84e73f288c5686/weldx/util/util.py#L195
• asdf-astropy: one test fails due to the expectation that all ASDF file objects will be converted on load: https://github.com/astropy/asdf-astropy/blob/448542b99ff6a82b9aeb810e78fb253e2fbc155f/asdf_astropy/converters/table/tests/test_table.py#L144 this test can be updated to access the table (to trigger the conversion)
• dkist: load_dataset grabs a reference to part of an open asdf file (after opening it with lazy_load=False): https://github.com/DKISTDC/dkist/blob/e5cf0f9c598c56cd5bc1514d9149fac03cc9896f/dkist/dataset/loader.py#L159 so this should be updated to include lazy_tree=False. Similar issues exist for the eit_dataset and small_visp_dataset fixtures: https://github.com/DKISTDC/dkist/blob/e5cf0f9c598c56cd5bc1514d9149fac03cc9896f/dkist/conftest.py#L260
• jwst has issues similar to dkist. For example many wfss tests are failing due to handling of the reference file data in assign wcs where the file is closed after references to portions of the file are captured: https://github.com/spacetelescope/jwst/blob/b762c669639416d61b6e7d3facc5cbee2d6bc9b0/jwst/assign_wcs/nircam.py#L365C44-L365C51 Given the limited use of pure asdf files in jwst, stdatamodels could be updated to disable "lazy_tree" when opening an asdf file. A regression test run with a modified stdatamodels shows the usual random errors (msa_fail/nofail) and one seemingly unrelated unclosed file error: https://plwishmaster.stsci.edu:8081/job/RT/job/JWST-Developers-Pull-Requests/1130/
• asdf-zarrr: the failures here are real as the new AsdfDictNode instance is not json serializable (more on this later)

Checklist:

• pre-commit checks ran successfully
• tests ran successfully
• for a public change, a changelog entry was added
• for a public change, documentation was updated
• for any new features, unit tests were added