What

• built on top of New LeafTransform3D, replacing OutOfTreeTransform3D #7015

Removes

• Scale3D datatypes
• Transform3D datatype
• TranslationRotationScale3D datatype
• Transform3D component

compatibility considerations were already done all in previous PRs. For some of these there's utilities to make actual use similar to before.

Checklist

• I have read and agree to Contributor Guide and the Code of Conduct
• I've included a screenshot or gif (if applicable)
• I have tested the web demo (if applicable):
  • Using examples from latest main build: rerun.io/viewer
  • Using full set of examples from nightly build: rerun.io/viewer
• The PR title and labels are set such as to maximize their usefulness for the next release's CHANGELOG
• If applicable, add a new check to the release checklist!
• If have noted any breaking changes to the log API in CHANGELOG.md and the migration guide

• PR Build Summary
• Recent benchmark results
• Wasm size tracking

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