Add icons for the new tabs in the Energy Dashboard

[itsmariodias]

With the Energy dashboard now having its own tabs like Summary / Energy / Water etc in 2025.12, the current layout has the tabs at the bottom like other dashboards but HomeAssistant has not provided any icons for these tabs, so its looks really kind of odd in the companion app. Is it possible to configure some icons via the theme?

[Nerwyn]

View icons are configured by Home Assistant, it is not possible to modify them with this theme's companion module.

[itsmariodias]

Figured that might be the case, will try and raise it with the core team itself.