Show split of DHW / Space heating split on the daily energy display

The colours of the heat bar on the daily view could be coloured to show the split of DHW / Space heating. Just like we currently do for cooling & immersion energy. e.g 

<img width="1536" height="1166" alt="Image" src="https://github.com/user-attachments/assets/db5e00a4-52b1-4b4c-b5c1-2e68deaaede4" />