PushNotificationChannel variable calls different namespaces

Describe the bug

It took me a while to track down why the same .NET MAUI apps were behaving differently. One is newly created with net.8-preview while the other was upgraded to net.8-preview for net7.0.

When creating PushNotificationChannel object, the new app picks microsoft.windowsappsdk 1.2.230118.102 (with namespace Microsoft.Windows.PushNotifications) while the upgraded one picked microsoft.windows.sdk.net.ref\10.0.19041.28 (with namespace Windows.Networking.PushNotifications).

The new app fails to compile for a very strange reason: referring to a static field of type PushNotificationChannel in the Windows App constructor refers to Microsoft.Windows.PushNotifications namespace. However, the PushNotificationChannel field outside of the constructor, is not visible as Microsoft.Windows.PushNotifications; the reference is instead looking for Windows.Networking.PushNotifications hence compilation fails.

I can enforce the reference by declaring:
using PushNotificationChannel = Windows.Networking.PushNotifications.PushNotificationChannel;
and compilation will succeed.

Steps to reproduce the bug

1. Declare a static filed or property of type PushNotificationChannel in Windows App constructor.
2. Try to create the static field or property object outside of the constructor as:
   channel = await PushNotificationChannelManager.CreatePushNotificationChannelForApplicationAsync();

Expected behavior

Should compile but PushNotificationChannel is referred to with different namespaces depending on where the field or property is defined -- inside or outside the constructor.

Screenshots

No response

NuGet package version

Windows App SDK 1.2.5: 1.2.230313.1

Packaging type

Packaged (MSIX)

Windows version

Windows 11 version 22H2 (22621, 2022 Update)

IDE

Visual Studio 2022-preview

Additional context

No response

No repository file or test is named. Start by reproducing the reported packaged .NET MAUI project with Windows App SDK 1.2.5, then compare the resolved package references and PushNotificationChannel namespaces between new and upgraded projects. Done means the same declaration and creation path compile consistently without the namespace alias workaround.