Allow everyone to read or write a wiki by a repo unit setting (#30495)
Replace #6312
Help #5833
Wiki solution for #639
(cherry picked from commit 3feba9f1f44156c256a30d25ad1c25f751819c94)
Conflicts:
Trash everything, just keep the migration placeholder to ensure the Gitea
sequence is preserved. The Wiki edition is implemented differently.
authored by