fix(avl): partial revert from #1881

[notJoon]

Description

closes #3533

Changed only the node.gno files to before #1881, but kept the implementation of the TraverseInRange function that was modified in #3393.

[Gno2D2]

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[thehowl]

Changes from node.gno before 1881: https://www.diffchecker.com/hpbhMjNj/

Looks good.