`-Wx-partial` and friends aren't in 9.8.1 `--show-options`

Summary

GHC 9.8.1's ghc --show-options doesn't show -Wx-partial, -Werror=x-partial, -Wno-x-partial, etc. The options are accepted, however.

Steps to reproduce

ghc --show-options 2>&1 | grep x-partial

Expected behavior

It should show all of the -W and -W[no-]error= options involving x-partial, as it does for other warnings.

Environment

• GHC version used: 9.8.1

Optional:

• Operating System: Ubuntu 22.04.3
• System Architecture: x86_64