Fixing highp issue - Batch Tables

[YVin3D]

Fixes #8311

[cesium-concierge]

Thanks for the pull request @YoussefV!

• ✔️ Signed CLA found.
• ❔ CHANGES.md was not updated.
  • If this change updates the public API in any way, please add a bullet point to CHANGES.md.
• ❔ Unit tests were not updated.
  • Make sure you've updated tests to reflect your changes, added tests for any new code, and ran the code coverage tool.

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• Cesium Viewer works.
• Works in 2D/CV.
• Works (or fails gracefully) in IE11.

[mramato]

@likangning93 mentions in the linked issue that we should roll back #7421, is that still the case?

[YVin3D]

@likangning93 mentions in the linked issue that we should roll back #7421, is that still the case?

@mramato Just addressed this in the latest commit. The answer turned out to be yes, but not exactly. Because #7421 was fairly old, it needed careful rolling back. Latest push should have fixed it. I needed to only remove code that was related to the high precision issue, which was a little involved

[likangning93]

👏👏👏

[likangning93]

Thanks @YoussefV! Just one small code comment.

Also, since the fix here is at the batch-table level it should also help anyone who's storing float attributes with primitives on mobile, can you also update CHANGES.md for that?