Missing sharedassets0.assets file in language patch does not terminate install

Currently, if a matching `sharedassets0.assets` file is not found in the language patch, the installer will just hope for the best and use the default one.

It may be a better idea to stop the install with an error if this happens.

I think the way it works currently is that we extract the whole language patch archive directly, which automatically overwrites the sharedassets0.assets. But it may be better to leave the install as-is, without the language patch installed, if we know for sure it won't work.

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Also see #192 if this is still to be treated as a warning, not an error

Procure o código que extrai o arquivo do patch de idioma e lida com o arquivo sharedassets0.assets. O instalador provavelmente tem uma função que verifica esse arquivo; modifique-a para gerar um erro ou parar a instalação se o arquivo estiver ausente. Verifique o issue relacionado #192 para o contexto sobre avisos vs. erros. Teste simulando um patch de idioma que esteja faltando o arquivo sharedassets0.assets.

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