Setting WindowState to Maximized does not work before ShowDialog for second display

### Description

**Scenario**
- We want to create instance of our custom window
- show it at second/third screen maximized.

**Problem**
- We create instance of window
- Set location somewhere inside desired display.
- Set `WindowState` to `WindowState.Maximized`.
- It does not work. Window is always maximized on the main display.

So we do not know why setting `WindowState` works only for main display before `ShowDialog` is used but not for other displayes. Setting WindowState when window is already shown works as expected.

See example in attachment.

### Reproduction Steps

See example in attachment.
[WpfApp4.zip](https://github.com/user-attachments/files/17040598/WpfApp4.zip)

### Expected behavior

Setting WindowState to Maximized work for all displayes even if called before ShowDialog
and window is properly maximized on the correct display.

### Actual behavior

Window is always shown on the main display if maximized before shown.

### Regression?

_No response_

### Known Workarounds

- When we use `SourceInitialized` and ste WindowState there to Maximized it will show correctly on the second display.

### Impact

_No response_

### Configuration

_No response_

### Other information

_No response_