remove defaultValue() and create DefaultValue namespace

[dave-b-b]

Description

• I started over because I could not get the tests to pass
• removed defaultValue() in 'easy' to spot references
• fetched most up to date copy of cesium, so that my pull request wasn't cluttered

Issue number and link

Issue: 11674 https://github.com/CesiumGS/cesium/issues/11674

Testing plan

The following tests failed: ✗ renders a point ✗ renders pnts with point size style

Author checklist

• [x] I have submitted a Contributor License Agreement
• [x] I have added my name to CONTRIBUTORS.md
• [x] I have updated CHANGES.md with a short summary of my change
• [x] I have added or updated unit tests to ensure consistent code coverage
• [x] I have updated the inline documentation, and included code examples where relevant
• [x] I have performed a self-review of my code

[github-actions[bot]]

Thank you for the pull request, @dave-b-b!

:white_check_mark: We can confirm we have a CLA on file for you.

[dave-b-b]

@jjspace Can you delete the other commits I had? I started over because I couldn't get the tests to pass. This one is much cleaner. If I can get help on the two tests that are failing, then I can move forward with this one.

[jjspace]

@dave-b-b I'm a little confused on the state of this with https://github.com/CesiumGS/cesium/pull/12207 still open? should that PR be closed and only plan to merge this one? All the tests look like they're passing on this branch, which ones are you having issues with? I also still see a bunch of instances of defaultValue() being used on this branch, are there commits missing? is this ready to review?

[dave-b-b]

@jjspace Yes, I could not get the tests to pass on #12207, so I started over. You can delete that pull request because I redid everything here. I had two tests fail: ✗ renders a point ✗ renders pnts with point size style

They weren't passing on my machine. I'm almost done with this pull request. I'm trying to finish everything right now.

[dave-b-b]

@jjspace I finished and submitted the final pull request, but I'm not sure whether I should rebase/merge.

A few of the tests are failing, so I must have messed something up. Can you help with this?

1. destroys resources after pixel datatype changes
   Renderer/FramebufferManager

2. destroys resources after pixel format changes
   Renderer/FramebufferManager

3. BalloonStyle: creates table from ExtendedData
   DataSources/KmlDataSource

4. Parse Camera and LookAt on features
   DataSources/KmlDataSource

5. recreates resources when HDR changes
   Scene/GlobeTranslucencyFramebuffer

6. white
   Scene/PostProcessStageCollection HDR tonemapping Reinhard

7. red
   Scene/PostProcessStageCollection HDR tonemapping Reinhard

8. green
   Scene/PostProcessStageCollection HDR tonemapping Reinhard

9. blue
   Scene/PostProcessStageCollection HDR tonemapping Reinhard

10. white
    Scene/PostProcessStageCollection HDR tonemapping Filmic

11. red
    Scene/PostProcessStageCollection HDR tonemapping Filmic

12. green
    Scene/PostProcessStageCollection HDR tonemapping Filmic

13. blue
    Scene/PostProcessStageCollection HDR tonemapping Filmic

14. white
    Scene/PostProcessStageCollection HDR tonemapping ACES

15. red
    Scene/PostProcessStageCollection HDR tonemapping ACES

16. green
    Scene/PostProcessStageCollection HDR tonemapping ACES

17. blue
    Scene/PostProcessStageCollection HDR tonemapping ACES

18. white
    Scene/PostProcessStageCollection HDR tonemapping PBR Neutral

19. grey
    Scene/PostProcessStageCollection HDR tonemapping PBR Neutral

20. red
    Scene/PostProcessStageCollection HDR tonemapping PBR Neutral

21. green
    Scene/PostProcessStageCollection HDR tonemapping PBR Neutral

22. blue
    Scene/PostProcessStageCollection HDR tonemapping PBR Neutral

23. renders with HDR when available
    Scene/Scene

24. renders a point
    Scene/Vector3DTilePoints

25. renders pnts with point size style
    Scene/Model/Model3DTileContent pnts

26. changing specularEnvironmentMaps works
    Scene/Model/Model imageBasedLighting

[dave-b-b]

@jjspace Everything seems fine except two tests that I can't get to pass.

• renders a point
• renders pnts with point size style

[dave-b-b]

@jjspace Not sure why this test fails in the pipeline, but it passes when I run it on my computer....

[jjspace]

@dave-b-b that statistics test failure is a known test failure we've been fighting in CI for a little bit. Don't worry about it https://github.com/CesiumGS/cesium/issues/11958

[dave-b-b]

@jjspace I think this is done now. I add something to the change log under 2024-12-01

[dave-b-b]

@jjspace Should I update the branch? I don't know what I should do. We already discussed the one test that is failing.

[dave-b-b]

@jjspace I didn't realize that rebasing would bring in changes from other pull requests. The only way for me to undo this would be to redo the vast majority of the pull request. Can you help me figure this out?