onContextMenu callback added

[JadenHowell]

Description

Adds the 'onContextMenu' prop, which is a callback that will fire when a chart is right clicked. The callback fires with the right click event and the nearest datum.

Motivation and Context

This enables consumers of React Spectrum Charts to allow for right clicking for more granular actions acting on specific data points, such as leaving a comment tied directly to a specified data point on a line chart.

How Has This Been Tested?

Verified by linking the build to my consuming application and testing right click. Also added 'onContextMenu' to line and bar stories associated with clicking, and added tests to verify callback fires.

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• I have signed the Adobe Open Source CLA.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
93.6% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

🎨 Storybook -> https://opensource.adobe.com/react-spectrum-charts/PR-728

📚 Docs -> https://opensource.adobe.com/react-spectrum-charts/PR-728-docs/