When creating a repo, the "FORCE_PRIVATE" config option should be
respected, `readonly` doesn't work for checkbox, so it should use
`disabled` attribute.
(cherry picked from commit edbf74c418061b013a5855f604dd6be6baf34132)
Conflicts:
templates/repo/create.tmpl
templates/repo/migrate/codebase.tmpl
templates/repo/migrate/git.tmpl
templates/repo/migrate/gitbucket.tmpl
templates/repo/migrate/gitea.tmpl
templates/repo/migrate/github.tmpl
templates/repo/migrate/gitlab.tmpl
templates/repo/migrate/gogs.tmpl
templates/repo/migrate/onedev.tmpl
already in forgejo fc0c5e80da Fix and improve repo visibility checkbox when FORCE_PRIVATE is on (#3786)
enforcing FORCE_PRIVATE on repo settings was manually tested
with a repository of an unprivileged user after setting
FORCE_PRIVATE = true
a649610d61