uwp: workaround a false positive in certification of orc

It seems that the Windows App Certification Kit searches all files and
binaries for the regex '\<reg\>' (or something like it) and throws
errors if it exists. Supposedly this is for preventing apps from
running REG.EXE

https://blogs.msdn.microsoft.com/appconsult/2017/08/16/how-to-validate-if-your-application-is-compliant-with-the-windows-store-polices-windows-10-and-windows-10-s/
1 job for trivial-uwp-fix in 58 seconds (queued for 53 seconds)
Status Job ID Name Coverage
  Build
passed #391561
debian sid

00:00:58