Special:Upload is heavily customized in Commons. Among other things, the "Licensing" dropdown must be translated to a language to make it actually usable. If [[MediaWiki:Licenses]] is not translated to a language, then the form is unusable in that language because you cannot upload a file without specifying a license explicitly.
An example is Hindi: https://commons.wikimedia.org/wiki/Special:Upload?uselang=hi
Is it possible to make it at least basically usable without an explicit translation? For example, to make it fall back to English?