[Bug]: Core version of RAR fails to read WinRT runtime version from assemblies #8731

Issue Description

The non-Framework / non-Windows implementation of RAR has a bug where it incorrectly assumes that the metadata version - referred to as "runtime version" in the code - has to start with 'v'. Metadata version of WinRT files looks like WindowsRuntime 1.4 or WindowsRuntime 1.4;CLR v4.0.30319.

Steps to Reproduce

Create a WinRT component using the Windows Runtime Component template in VS and add it as a reference to a .NET project. Build the project.

Expected Behavior

Actual Behavior

Analysis

Here's the bug:

It's not clear what the downstream effect is. Since .winmd's cannot be referenced by modern .NET projects anyway - the build errors out in the CheckForUnsupportedWinMDReferences task - it is possible that this part of Core RAR may be deleted.

Versions & Configurations

MSBuild version 17.6.0-preview-23174-01+e7de13307 for .NET