Can't change H5P strings language after the package has been downloaded

This issue only needs to be tested in 1 device. In web as teacher, create an H5P (activity or not, it doesn't matter) and configure it to display "Embed button" and "Copyright button". In "Master > MM Dev Testing > H5P" there is a label already configured like this, the second one (Cloudberries slides). In the app, configure the app to use English language. Download the H5P file and then play it. Check that you see a bar at the bottom with the options "Right of use" and "Embed". Leave the page so the package is unloaded (e.g. go back one page). Now change the app language to Spanish. Open the package again. It'll take a bit to load because it needs to re-create the index file. Check that the options in the bottom bar are now displayed in Spanish language (e.g. "Derechos de uso").