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

1 job for trivial-uwp-fix in 58 seconds (queued for 53 seconds)
Status Job ID Name Coverage
passed #391561
debian sid