Description

Calling triggerTodaySelection when date picker is collapsed throws TypeError:
Cannot set property 'viewDate' of undefined

• igniteui-angular version: 8.1.0
• browser: all

Steps to reproduce

1. Start this StackBlitz sample.
2. Click Today button.
3. Observe the console

Result

ERROR Error: Cannot set property 'viewDate' of undefined
is logged in the console.

Expected result

No errors should be logged in the console.