WebView2 does not render any URLs on ARM64 (Release)

### Describe the bug

Hi,

When I build my WinUI 3 application targeting `arm64` using the `win-arm64` build profile in `Release mode`, the `WebView2` control does not render any content (no URLs are displayed).

Settings / Versions being used:
- TargetFramework : net9.0-windows10.0.26100.0
- WindowsAppSDK : 10.0.26100.57
- WinUI3 : 1.6.250228001

However, the same application works as expected on other architectures such as both win-x64 and win-x86 (Debug & Release) and win-arm64 (**only on Debug mode**).

### Why is this important?

WebView2 only works on :
- win-x64 (Debug / Release)
- win-x86 (Debug / Release)
- win-arm64 (**Only Debug**)

### Steps to reproduce the bug

```cs
WebView2 chatWebView = new WebView2
{
Source = new Uri("URL_TO_BE_RENDERED"),
HorizontalAlignment = HorizontalAlignment.Stretch,
VerticalAlignment = VerticalAlignment.Stretch
};
```

### Actual behavior

_No response_

### Expected behavior

_No response_

### Screenshots

_No response_

### NuGet package version

- TargetFramework : net9.0-windows10.0.26100.0
- WindowsAppSDK : 10.0.26100.57
- WinUI3 : 1.6.250228001

### Windows version

Windows 11 (24H2): Build 26100

### Additional context

_No response_

Start with the supplied WebView2 reproduction and compare win-arm64 Release with Debug and the working x64/x86 builds using the listed WindowsAppSDK, WinUI 3, and Windows versions. Done means the cause is narrowed to a project area or dependency and a verified fix or actionable finding restores URL rendering for win-arm64 Release.

Written by the indexing model from the issue text.