fix(data overlay): add onWidgetClick and onSelectionChange event support to release 3.x

[haweston]

Overview

Click an overlay doesn't have data binding information in the onSelectionChange event fired from the SceneViewer and the onWidgetClick event is fired at all.

Ports change to release 3.x as well

Verifying Changes

Create scene with dataoverlay that has 2+ data bindings added to it.

Connect to scene in SceneViewer mode on storybook

Click the overlay widget

verify that the storybook actions log both selection and widget change events with databindings that look like this for array of 2 data bindings:

Scene Composer

For scene-composer package changes specifically, you can preview the component in the published storybook artifact. To do this, wait for the Publish Storybook action to complete below.

• Click on the workflow details
• Select the Summary item on the left
• Download the zip file

To run the storybook build locally, you need a local static web server:

npm install -g httpserver
cd <Extracted Zip Directory>
httpserver

Then open the website http://localhost:8080 to run the doc site.

Legal

This project is available under the Apache 2.0 License.

[sheilaXu]

The change looks good. but can you update the PR title to be the same as commit message so it's more meaningful?