bug(scrolling): Opening dialog in window virtual scroll break scrolling

[Mikastark]

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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

cdk-virtual-scroll-viewport[scrollWindow] is empty when opening a mat-dialog if the window have been scrolled.

When the dialog is closed, everything returns to normal but the scroll is restored to top 0.

Reproduction

Steps to reproduce:

1. Go to https://stackblitz.com/edit/angular-psylrc
2. Click on "open dialog" button of the 100th line

Expected Behavior

The virtual scroll should not be influenced by dialog

Actual Behavior

Virtual scroll container become empty and when the dialog is closed the items come back but the scroll is restored to 0

Environment

• Angular: 15.0.2
• CDK/Material: 15.0.2
• Browser(s): any
• Operating System (e.g. Windows, macOS, Ubuntu): any