Fix text encoding for new signature workflow
The strings to be used are unicode GooString, not utf-8 / ascii std::strings, so fix it.
Else plain English strings ends up embedding 16-40 mb of fonts for the cjk and other characters.
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The strings to be used are unicode GooString, not utf-8 / ascii std::strings, so fix it.
Else plain English strings ends up embedding 16-40 mb of fonts for the cjk and other characters.