Fix QString::arg() with scoped enum

[wishstudio]

Using QString::arg() with scoped enum do not implicitly convert the enums to int starting in Qt 6.10.1. This causes compilation error:

app/render/videoparams.cpp: In static member function 'static QString olive::VideoParams::GetFormatName(olive::core::PixelFormat)':
app/render/videoparams.cpp:229:74: error: no matching function for call to 'QString::arg(olive::core::PixelFormat&, int, int)'
  229 |   return QCoreApplication::translate("VideoParams", "Unknown (0x%1)").arg(format, 0, 16);
      |          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~

app/ui/humanstrings.cpp: In static member function 'static QString olive::HumanStrings::FormatToString(const olive::core::SampleFormat&)':
app/ui/humanstrings.cpp:63:74: error: no matching function for call to 'QString::arg(const olive::core::SampleFormat&, int, int)'
   63 |   return QCoreApplication::translate("AudioParams", "Unknown (0x%1)").arg(f, 1, 16);
      |          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~

This patch add static casts to int to fix these errors.