[Bug] [Android] Shell.TitleView incorrect positioning of content

### Description

Adding a Custom `Shell.TitleView` to a page results in incorrect positioning of the content. Adding a `Shell.TitleView` according to the [Xamarin.Forms documentation](https://docs.microsoft.com/en-us/xamarin/xamarin-forms/app-fundamentals/shell/pages#display-views-in-the-navigation-bar), the image should be displayed horizontally and vertically centered. Instead, it is positioned too far to the right and bottom. A repro is available [here](https://github.com/LarsBehl/MauiTitleViewPositioning)

#### Actual behaviour

#### Expected behaviour
The added image is a menu icon (same as the one for the navigation, just in black). The image should be vertically and horizontally centered in the titlebar.

### Steps to Reproduce

1. Create new Maui project
2. Add new Xaml-Page
3. Add `Shell.TitleView` to the newly created page
4. Add a `Image` to the `Shell.TitleView` and add `HorizontalOptions="Center"` `VerticalOptions="Center"`
5. Replace content of `MainPage` with a `Shell`
6. Add the xml-Namespace `xmlns:local="clr-namespace:MauiApp1"`
7. Add `FlyoutItem` to the `Shell` with `ShellContent` `ContentTemplate="{DataTemplate local:HomePage}"`

### Version with bug

Preview 10 (current)

### Last version that worked well

Unknown/Other

### Affected platforms

Android

### Affected platform versions

Android 11/API 30

### Did you find any workaround?

_No response_

### Relevant log output

_No response_

Start with the linked MauiTitleViewPositioning repro and the Android handling of Shell.TitleView. Reproduce the layout with the centered Image on Android 11/API 30, then verify that the image is horizontally and vertically centered in the title bar without regressing the documented Shell.TitleView behavior.

Written by the indexing model from the issue text.