fix: Update title on project save

plugins/builtin/source/content/project.cpp

@@ -164,6 +164,7 @@ namespace hex::plugin::builtin {
 
         AchievementManager::unlockAchievement("hex.builtin.achievement.starting_out", "hex.builtin.achievement.starting_out.save_project.name");
 
+        EventManager::post<RequestUpdateWindowTitle>(); // request, as this puts us into a project state
 
         return result;
     }