* fix: remove `tree-item-destroyed` event
- Composition listeners should only be removed if the item has been deleted or its parent has been collapsed. Both are handled by `mct-tree` already, so doing this additionally when tree-items unmount is redundant.
- In addition to that, any time the `visibleTreeItems` array changes, all tree-items will unmount, so this just doesn't work as intended-- it will unregister all composition listeners whenever the tree changes!
* test: stabilize imagery test
- Use keyboard gestures to navigate
* fix: lint:fix
f0ef93dd3f