GetRuntime_AllProperties failing on WinArm64

### Description

We're seeing an error in multiple unrelated PRs on Windows ARM64:
- https://github.com/getsentry/sentry-dotnet/actions/runs/19187151347/job/54855951429?pr=4705
- https://github.com/getsentry/sentry-dotnet/actions/runs/19155728136/job/54922505190?pr=4498

```
[xUnit.net 00:00:05.82] Sentry.Tests.PlatformAbstractions.RuntimeInfoTests.GetRuntime_AllProperties [FAIL]

Error: Assert.NotNull() Failure: Value is null

Failed Sentry.Tests.PlatformAbstractions.RuntimeInfoTests.GetRuntime_AllProperties [1 ms]
Error Message:
Assert.NotNull() Failure: Value is null
Stack Trace:
at Sentry.Tests.PlatformAbstractions.RuntimeInfoTests.GetRuntime_AllProperties() in C:\a\sentry-dotnet\sentry-dotnet\test\Sentry.Tests\PlatformAbstractions\RuntimeInfoTests.cs:line 10
```

Temporary workaround implemented in https://github.com/getsentry/sentry-dotnet/pull/4713:
- https://github.com/getsentry/sentry-dotnet/pull/4713