bug(material/dialog): auto-focusing a CSS class doesn't work when animations are disabled

[mmalerba]

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

Auto-focusing a CSS class fails when animations are disabled

Reproduction

StackBlitz link: https://stackblitz.com/edit/yuzht5-trwt8i?file=src%2Fmain.ts
Steps to reproduce:

1. Open dialog
2. Focus is not on install button

Expected Behavior

Auto-focusing a CSS class works regardless of animations

Actual Behavior

Auto-focusing a CSS class fails when animations are disabled

Environment

• Angular: 18.0.0
• CDK/Material: 18.0.0

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