Store read access in access for team repo's (go-gitea#20275)

- Backport go-gitea#20275
  - Currently when a Team has read access to a organization's non-private repository, their access(in the `access` table) won't be stored in the database. This cause issues for code that rely on read access being stored, like retrieving all users who have read permission to that repository(even though this is confusing as this doesn't include all registered users). So from now-on if we see that the repository is owned by a organization don't increase the `minMode` to write permission.
  - Resolves go-gitea#20083

Author: Gusted

models/perm/access/access.go

@@ -86,7 +86,13 @@ func updateUserAccess(accessMap map[int64]*userAccess, user *user_model.User, mo
 // FIXME: do cross-comparison so reduce deletions and additions to the minimum?
 func refreshAccesses(ctx context.Context, repo *repo_model.Repository, accessMap map[int64]*userAccess) (err error) {
 	minMode := perm.AccessModeRead
-	if !repo.IsPrivate {
+	if err := repo.GetOwner(ctx); err != nil {
+		return fmt.Errorf("GetOwner: %v", err)
+	}
+
+	// If the repo isn't private and isn't owned by a organization,
+	// increase the minMode to Write.
+	if !repo.IsPrivate && !repo.Owner.IsOrganization() {
 		minMode = perm.AccessModeWrite
 	}