- [x] Have you signed the [CLA](http://www.ubuntu.com/legal/contributors/)? ----- This is a partial attempt at fixing https://github.com/canonical/snapcraft/issues/4542 specifically [Alex's comment](https://github.com/canonical/snapcraft/issues/4542#issuecomment-1934943478). Note that this change does not take into consideration cases where the stage package is only available for `architecture: all`.