SettingsCard and SettingsExpander doesn't support EntranceThemeTransition in WinUI3

### Describe the bug

In the WinUI3 project, when I try to use `EntranceThemeTransition` as a ChildrenTransition with `SettingsCard` or `SettingsExpander ` on a Blank Page, this Transition animation doesn't work.

### Steps to reproduce

```text
the sample code is here:

Option 1
Option 2
Option 3




Option 1
Option 2
Option 3




Option 1
Option 2
Option 3

Item 1


Item 2


Item 3


Item 4


Item 5

```
```

### Expected behavior

the theme transitions can work well with each element


### Screenshots

_No response_

### Code Platform

- [ ] UWP
- [X] WinAppSDK / WinUI 3
- [ ] Web Assembly (WASM)
- [ ] Android
- [ ] iOS
- [ ] MacOS
- [ ] Linux / GTK

### Windows Build Number

- [ ] Windows 10 1809 (Build 17763)
- [ ] Windows 10 1903 (Build 18362)
- [ ] Windows 10 1909 (Build 18363)
- [ ] Windows 10 2004 (Build 19041)
- [ ] Windows 10 20H2 (Build 19042)
- [ ] Windows 10 21H1 (Build 19043)
- [ ] Windows 10 21H2 (Build 19044)
- [ ] Windows 10 22H2 (Build 19045)
- [ ] Windows 11 21H2 (Build 22000)
- [X] Other (specify)

### Other Windows Build number

Build 22631

### App minimum and target SDK version

- [ ] Windows 10, version 1809 (Build 17763)
- [ ] Windows 10, version 1903 (Build 18362)
- [ ] Windows 10, version 1909 (Build 18363)
- [ ] Windows 10, version 2004 (Build 19041)
- [ ] Windows 10, version 2104 (Build 20348)
- [ ] Windows 11, version 22H2 (Build 22000)
- [ ] Other (specify)

### Other SDK version

_No response_

### Visual Studio Version

_No response_

### Visual Studio Build Number

_No response_

### Device form factor

_No response_

### Additional context

_No response_

### Help us help you

Yes, I'd like to be assigned to work on this item.

Beginne mit der bereitgestellten WinUI 3 XAML-Reproduktion und konzentriere dich auf StackPanel.ChildrenTransitions sowie die Steuerelemente SettingsCard und SettingsExpander. Vergleiche ihr Verhalten mit den einfachen Grid-Elementen im Beispiel; abgeschlossen ist die Aufgabe, wenn EntranceThemeTransition für jedes SettingsCard- und SettingsExpander-Element wie erwartet ausgeführt wird.

Vom Indexierungsmodell aus dem Issue-Text verfasst.