fix(modeling): undo-revert measureBoundingBox

[hrgdavor]

fix a bug in measureBoundingBox caused by mutating original boundingBox with transform

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this fix also depends on #970 to be complete fix for #966

[z3dev]

@hrgdavor thanks for splitting this out.

does this fix the issue #966 ? also, can you add the same tests for geom2 and path2? It would be good to verify those work as well.