3.37 audit (#7092)
* Add some missing docs descriptions
* Rename strange interface in props
* Fix sizes of pending button spinner
* Add docs for --tree-item-level custom property in Tree
* fix ts
* Require children for disclosures
* Make it so Accordion isn't labellable
* fix button typescript
* narrow test utils exports and future proof
* Remove isPending from ActionButton
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Co-authored-by: Robert Snow <rsnow@adobe.com>
Co-authored-by: GitHub <snowystinger@gmail.com>
