IgxChip onSelection.originalEvent property returns null event when selecting using mouse click.

[skrustev]

Description

The originalEvent igxChip property provided when the onSelection event is triggered is null even when the user selects the chips using the mouse button.

• igniteui-angular version: 8.2.x
• browser: any

Steps to reproduce

1. Open the "Chips" demo
2. Bind to the onSelection event for each chip defined on the Chips in Chip Area section.
3. Click on a chip
4. Observe the onSelection event property originalEvent.

Result

The originalEvent property is null even though it shouldn't be since there is an event that triggers the onSelection.

Expected result

The originalEvent property shouldn't be null and point to the actual original event.