Prevent pointer events on invisible box for tooltips

[Jeremyea3001]

The tooltip component had an invisible box that had pointer events enabled, which can prevent clicks on the graph

[Copilot]

Pull Request Overview

Fixes tooltip component interference with graph interactions by disabling pointer events on invisible container elements. The change prevents the tooltip's invisible box from blocking user clicks on the underlying graph.

• Added pointer-events: none CSS property to tooltip container div
• Updated demo to use nodeHover instead of nodeRightclick for better user experience

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
src/overlay/tooltip.tsx	Added CSS to disable pointer events on tooltip container
demo/src/App.tsx	Changed demo tooltip trigger from right-click to hover

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[w8r]

But pointer-events is inheritable? it would propagate to the tooltip body