bug(CdkPortalOutlet): Component can be rendered outside CdkPortalOutlet

[SebastianPodgajny]

Is this a regression?

• Yes, this behavior used to work in the previous version

The previous version in which this bug was not present was

No response

Description

If you have ComponentPortal with provided ViewContainerRef NgForOf can rerender component outside CdkPortalOutlet.
Looks like this code is executed only once and after NgForOf dom manipulations there is nothing that can move ComponentPortalExample to expected position

Reproduction

Demo

Steps to reproduce:

1. Wait until component outlet will render component
2. Drag Item 1 down
3. Drag Item 1 up
4. ComponentPortalExample is rendered inside item list instead of inside component outlet
   instead

Expected Behavior

ComponentPortalExample should stay inside CdkPortalOutlet

Actual Behavior

ComponentPortalExample is rendered inside item list instead of inside CdkPortalOutlet

Environment