Adapts codegen templates to rtiddsgen 7.7 plain data members

qt6-after/qt6-migrated-legatus/Lts/Common/CodeGen/GrantleeWrappers.h

@@ -484,7 +484,9 @@ class IdlDataWrapper final : public NameWrapper
 
     QString nameGetter() const
     {
-        return m_data.name + (m_data.isOptional ? QStringLiteral("().get") : QString());
+        // rtiddsgen 7.7 generates public data members (no getters); optional
+        // members are omg::types::optional<T> and are unwrapped via .get().
+        return m_data.name + (m_data.isOptional ? QStringLiteral(".get()") : QString());
     }
 
   private: