This commit resolves issues with the touch highlight behavior on tree
nodes in touch-enabled Chromium browsers (such as Google Chrome).
The fix addresses two issues:
1. Dual color transition issue during tapping actions on tree nodes.
2. Not highlighting full visible width of the node on keyboard focus.
Other changes include:
- Create `InteractableNode.vue` to centralize click styling and logic.
- Remove redundant click/hover/touch styling from `LeafTreeNode.vue` and
`HierarchicalTreeNode.vue`.
20633972e9