Demangler should create types referenced from demangled names that don't already exist #5920

Version and Platform (required):

• Binary Ninja Version: 4.2.6042-dev, e875db7b
• OS: macos
• OS Version: 14.6
• CPU Architecture: arm64

Internal binary name deploy article cage.

I have the following but it looks wrong as QString::fromUtf8 only takes 1 argument.

14004330a      QString::append(this: &arg_18, QString::fromUtf8(&arg_20, 0x40139b48))

So I 'Y' on QString::fromUtf8 and get

class QString `?fromUtf8@QString@@SA?AV1@PEBDH@Z`(char const*, int32_t)

I cannot remove the second argument as there's a problem with parsing the method name.

Is there a workaround?