message: Simplify find_exported_function(Module, name) helper
diff: @@ -1552,13 +1552,7 @@ execution_result execute(const Module& module, FuncIdx func_idx, std::vector<uin
  std::optional<FuncIdx> find_exported_function(const Module& module, std::string_view name)
  {
  - for (const auto& export_ : module.exportsec)
  - {
  - if (export_.kind == ExternalKind::Function && name == export_.name)
  - return export_.index;
  - }
  -
  - return {};
  + return find_export(module, ExternalKind::Function, name);
  }
  std::optional<ExternalFunction> find_exported_function(Instance& instance, std::string_view name)
  