Regression: ContentDialog without animation when XamlChangeId.OptimizeApplyStyles enabled

### Describe the bug

When `XamlChangeId.OptimizeApplyStyles` is applied, the entrance animation of a `ContentDialog` no longer plays. To be exact, when you create a `CustomContentDialog` that derives from `ContentDialog`.

When removing the XamlChangeId opt-in, the entrance animation plays again.

### Why is this important?

A user-facing regression following the performance optimization, disturbing the user experience.

### Steps to reproduce the bug

[ContentDialogAnimationRepro.zip](https://github.com/user-attachments/files/30180422/ContentDialogAnimationRepro.zip)

Run attached repro app and click the button to open the custom ContentDialog. See that the animation is missing.
Then remove the `OptimizeApplyStyles` from the project file to see that the animation returns.

### Actual behavior

_No response_

### Expected behavior

_No response_

### Screenshots

_No response_

### NuGet package version

2.3.1

### Windows version

_No response_

### Additional context

_No response_