fix: Call MenuItem onClick if provided

[gnapse]

Short description

A MenuItem element should support receiving a onClick event handler. A good motivation to do it is to catch the click event early, and possibly call event.preventDefault(), which should prevent the menu item's selection action to happen.

PR Checklist

• Added tests for bugs / new features
• Updated docs (storybooks, readme)
• Executed npm run validate and made sure no errors / warnings were shown
• Described changes in CHANGELOG.md
• Bumped version in package.json and package-lock.json (npm --no-git-tag-version version <major|minor|patch>) ref
• Updated all static build artifacts (npm run build-all)

Versioning

I consider this a bug fix, since the onClick handler is already supported in the prop types, but we were not calling it internally. Hence this marks a new patch release.

[gnapse]

@frankieyan any idea why the new package version has not been published yet? It seems more than enough time since I merged this. And I do not see the publish action triggered.

[frankieyan]

The action is run when a release is created 👍

[gnapse]

Ah, I thought a push was enough. Thanks!