Allow downloading attachments of draft releases (#31369) (#31380)

Backport #31369 by Zettat123

Fix #31362

Co-authored-by: Zettat123 <zettat123@gmail.com>

routers/web/repo/repo.go

@@ -418,6 +418,7 @@ func RedirectDownload(ctx *context.Context) {
 	tagNames := []string{vTag}
 	curRepo := ctx.Repo.Repository
 	releases, err := db.Find[repo_model.Release](ctx, repo_model.FindReleasesOptions{
+		IncludeDrafts: ctx.Repo.CanWrite(unit.TypeReleases),
 		RepoID:        curRepo.ID,
 		TagNames:      tagNames,
 	})