haddock regression: formatting re-exported module

Summary

Two issues for a module which re-exports module.

1. haddock for GHC 9.12: the order of functions and types are automatically sorted. The original ordering should be kept.

2. haddock for GHC 9.8 or later: mark up such as "-- *" are ignored. (Except haddock for GHC 9.12, the original ordering is kept correctly.)

haddock for GHC 9.6 does not have these two issues.

Steps to reproduce

Use haddock to a module which re-exports module and look at the result. An example module is: https://github.com/kazu-yamamoto/network-control/blob/main/Network/Control.hs

Expected behavior

• The original ordering should be kept.
• The markups should be correctly handled.

Environment

• GHC version used: GHC 9.6 - GHC 9.12

Optional:

• Operating System:
• System Architecture:

added needs triage label

changed title from haddock reglession: formatting re-exported module to haddock regression: formatting re-exported module

removed needs triage label

added haddock label

assigned to @alt-romes

May have something to do with b3f7fb80