Angular Material CDK scrolling - Display a million items is not working...

How to Reproduce:
- Take the first example from https://material.angular.io/cdk/scrolling/examples open it in stackblitz an display 1 Mio instaed of 100,000
- Scroll down to the end. The last item displayed is 213,043

Cause:
- Maximum height of single Elements in Browsers

Possible Solution:
- Use more than one element inside the ViewPort to render Items

Start with the first CDK scrolling example at https://material.angular.io/cdk/scrolling/examples in StackBlitz and reproduce the failure with 1,000,000 items. Read the viewport behavior around the reported browser maximum element height and evaluate the proposed multi-element rendering approach; done means scrolling reaches and displays the final item.

Written by the indexing model from the issue text.