Add: Currency: Vietnamese Dong (#14474)

src/table/settings/locale_settings.ini

@@ -12,7 +12,7 @@ static std::pair<StringParameter, StringParameter> SettingsValueVelocityUnit(con
 
 uint8_t _old_units;                                      ///< Old units from old savegames
 
-static constexpr std::initializer_list<std::string_view> _locale_currencies{"GBP"sv, "USD"sv, "EUR"sv, "JPY"sv, "ATS"sv, "BEF"sv, "CHF"sv, "CZK"sv, "DEM"sv, "DKK"sv, "ESP"sv, "FIM"sv, "FRF"sv, "GRD"sv, "HUF"sv, "ISK"sv, "ITL"sv, "NLG"sv, "NOK"sv, "PLN"sv, "RON"sv, "RUR"sv, "SIT"sv, "SEK"sv, "TRY"sv, "SKK"sv, "BRL"sv, "EEK"sv, "LTL"sv, "KRW"sv, "ZAR"sv, "custom"sv, "GEL"sv, "IRR"sv, "RUB"sv, "MXN"sv, "NTD"sv, "CNY"sv, "HKD"sv, "INR"sv, "IDR"sv, "MYR"sv, "LVL"sv, "PTE"sv, "UAH"sv};
+static constexpr std::initializer_list<std::string_view> _locale_currencies{"GBP"sv, "USD"sv, "EUR"sv, "JPY"sv, "ATS"sv, "BEF"sv, "CHF"sv, "CZK"sv, "DEM"sv, "DKK"sv, "ESP"sv, "FIM"sv, "FRF"sv, "GRD"sv, "HUF"sv, "ISK"sv, "ITL"sv, "NLG"sv, "NOK"sv, "PLN"sv, "RON"sv, "RUR"sv, "SIT"sv, "SEK"sv, "TRY"sv, "SKK"sv, "BRL"sv, "EEK"sv, "LTL"sv, "KRW"sv, "ZAR"sv, "custom"sv, "GEL"sv, "IRR"sv, "RUB"sv, "MXN"sv, "NTD"sv, "CNY"sv, "HKD"sv, "INR"sv, "IDR"sv, "MYR"sv, "LVL"sv, "PTE"sv, "UAH"sv, "VND"sv};
 static constexpr std::initializer_list<std::string_view> _locale_units{"imperial"sv, "metric"sv, "si"sv, "gameunits"sv, "knots"sv};
 
 static_assert(_locale_currencies.size() == CURRENCY_END);