There is a very good chance that SVG files larger than 256K can have their <switch> element undetected by the MW metadata extractor. Since the SVG translate tool is perfectly aware of the file size and the file content, it can add a workaround <def> element to signal these languages, similar to (what I just did to File:Escadre allemande d'Extrême-Orient 1914 1915-de.svg):
<defs>
<switch id="fakeswitch"><!-- This is for the Wikimedia server to detect language switches. You must add languages here each time you make a new translation, since the actual language-using stuff is too far away. -->
<g systemLanguage="hu,en"></g>
</switch>
</defs>