GetRuntime_AllProperties failing on WinArm64

[jamescrosswell]

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 #4713:

• Temporary workaround for GetRuntime_AllProperties failing on WinArm64 #4713

[linear]

NET-519

[Flash0ver]

See also: #4720